# Bathroom 7.37m2 with a Bathtub and Laundry Area – How to Design a Functional and Elegant Interior Step by Step - URL: https://f-projektow.pl/en/lazienka-73-7-m-z-wanna-i-pralnia-jak-zaprojektowac-funkcjonalne-i-eleganckie-wnetrze-krok-po-kroku.htm - ID: 298 - Blog: ybc - Published: 2026-04-28T00:00:00+00:00 We prepared this article for people who are planning a medium-sized bathroom and want to combine several important functions in one space: a bathtub, a comfortable washbasin area, a toilet and a laundry zone. With an area of 7.37m2, this is absolutely possible, but it requires a good layout, well-thought-out built-in furniture and a coherent material concept. We present a bathroom design for a family of four, created in a modern elegant style. The interior features beige tones, dark greys, wooden elements, black accents, marble and gold details. It is visually striking, but above all designed for everyday comfort. In this article, we explain how to plan such a space step by step: from function, through materials, to lighting and details. This is not a random inspiration, but an example of a design approach based on the real needs of household members. If you are planning a similar interior, also check out our [comprehensive online bathroom design service](https://f-projektow.pl/en/21-projekt-lazienki-projektowanie-lazienki.html), thanks to which we can prepare a project tailored to your floor area, layout and lifestyle. ## Key design conclusions - A 7.37m2 bathroom can accommodate a bathtub, laundry area, toilet and comfortable washbasin zone. - The functional layout is the most important part – tiles and details come later. - Custom built-in furniture allows you to hide the washing machine and dryer without losing aesthetics. - The contrast between light marble and dark slabs adds depth to the interior. - Wood warms up the arrangement and softens the coolness of stone surfaces. - A double washbasin is a very practical solution for a family. - LED lighting creates atmosphere, but it must be planned as part of the entire design. ## Bathroom 7.37m2 – when does this layout make sense? A bathroom of around 7m2 offers much more potential than a small apartment bathroom, but it still requires strong design discipline. This is the kind of space where it is easy to assume that “everything will fit”, only to later discover that the interior is overloaded, uncomfortable or difficult to keep tidy. In this project, we wanted the bathroom to be both representative and practical. A family of four needs a space that works well in the morning, in the evening, during children’s baths, laundry, drying and cosmetic storage. That is why we treated the interior not only as a bathroom, but also as a small utility zone hidden in an elegant form. ## The most common wrong assumptions when designing a bathroom In similar projects, we often encounter the belief that the washing machine and dryer must remain visible because “there is no other way to fit them in”. In fact, properly designed built-in furniture allows you to hide the appliances and organise the entire space. Another mistake is choosing materials before defining the function. Beautiful tiles will not solve the problem of lacking space for towels, cleaning products or a laundry basket. First, we design the layout, and only then do we select the finishes. A common concern is also the fear of dark colours. In this bathroom, we used dark slabs in the bathtub area, but combined them with light marble, warm wood and LED lighting. As a result, the interior does not feel heavy, but elegant and expressive. ## Criteria for good design decisions In a family bathroom, every decision should answer one question: will this be convenient in everyday use? Only then do we check how a given solution looks visually. In this project, four criteria were key: comfort, storage, material durability and aesthetic consistency. That is why we chose floor-to-ceiling built-in furniture, a double washbasin, a bathtub as the main relaxation zone and materials that create an elegant yet timeless atmosphere. ## How we designed the 7.37m2 bathroom step by step ## Step 1: Functional layout We started the project by dividing the interior into zones. The bathtub was placed by the wall with the window, which helped create the feeling of a home bathing area. The central point of the bathroom became the washbasin zone with two countertop basins, large backlit mirrors and a long countertop. We hid the laundry area in tall built-in furniture. The washing machine and dryer, stacked vertically, do not take up additional floor space and remain easily accessible. Thanks to the smoked glass front, the built-in unit does not look technical, but becomes part of the elegant arrangement. We especially recommend this solution for families who do not have a separate laundry room. With a well-designed layout, the bathroom can serve both bathing and utility functions without losing its aesthetic character. ## Step 2: Colours and materials In this arrangement, we used a palette based on beige tones, dark greys, black, marble and wood. Light marble slabs brighten the interior, while the dark cladding behind the bathtub adds depth and character. Wooden elements appear in the built-in furniture and cabinets under the washbasins. Their role is to warm up the composition and soften the coolness of the stone. Gold fixtures, handles and decorative rails introduce a premium effect without dominating the entire interior. The most important rule we applied in this project is proportion control. If dark marble appeared everywhere, the bathroom could feel too heavy. If only light surfaces were used, it would lose its expressiveness. The combination of these two directions gives the best result. ## Step 3: Lighting and details We treated lighting as one of the most important elements of the project. The bathroom features linear ceiling lighting, illumination in the bathtub area, decorative light by the mirrors and subtle LED accents that highlight the material divisions. Thanks to this, the interior changes its character depending on the time of day. In the morning, it is bright and functional, while in the evening it can become a calm, atmospheric bathing space. It is the lighting that gives the bathroom the feel of an elegant bathing salon. ## Variants and exceptions Not every 7m2 bathroom will have the same layout. If the room is narrow, instead of a double washbasin, you can use one larger basin and a longer countertop. If there is no room for a full laundry unit, the washing machine can be hidden under the counter or in a lower cabinet. In a bathroom without a window, it is worth expanding the lighting plan and using more light surfaces. Dark accents can still appear, but they should be used more selectively. ## Typical mistakes and how to fix them One of the biggest mistakes is leaving the washing machine and dryer without built-in housing. Even the best materials lose some of their effect when appliances immediately draw attention. The solution is custom furniture, a sliding front, hinged doors or smoked glass. Another issue is too little lighting. One ceiling lamp is not enough, especially in a bathroom with dark surfaces. It is worth planning general lighting, mirror lighting and decorative lighting. The third mistake is using too many materials. In an elegant bathroom, a limited palette works best: one base material, one contrasting material, wood as a warming element and metal as a detail. ## A washbasin area that combines symmetry and comfort The area with two washbasins was designed as the most representative part of the interior. A large countertop, two countertop basins and backlit mirrors create a composition that is very striking, yet also practical for a family of four. A double washbasin works especially well in the morning, when more than one person uses the bathroom. Thanks to this, the interior is not only beautiful in the visualisation, but also genuinely improves everyday organisation. ## A bathtub in a dark setting – a home spa effect The bathtub was placed against a dark wall with a marble pattern. This solution creates a strong visual focal point and makes the bathing area feel more intimate, atmospheric and elegant. LED lighting along the edges of the cladding highlights the structure of the material and adds depth to the arrangement. It is exactly these details that make the bathroom feel less like a standard utility room and more like a private relaxation zone. ## Hidden laundry area – a practical solution without losing aesthetics In a family bathroom, the laundry function is very important, but it does not have to dominate the interior. In this project, we placed the washing machine and dryer in tall built-in furniture, making the appliances easily accessible without disturbing the elegant composition. This solution should be considered already at the design stage, because it requires careful planning of dimensions, ventilation, access to installations and convenient opening of fronts. This is one of the reasons why, in a bathroom with multiple functions, [comprehensive online bathroom design](https://f-projektow.pl/en/21-projekt-lazienki-projektowanie-lazienki.html) works so well – it allows you to plan not only the appearance, but also the technical details of the interior. ## Example application – bathroom for a family of four In this project, the most important goal was to combine the comfort of a family bathroom with the aesthetics of a premium interior. On the one hand, we needed space for daily care, laundry, storage and children’s baths. On the other hand, the investors wanted an interior that was elegant, warm and refined. That is why we focused on a clear division of zones. The washbasin area is bright and open, the bathtub zone is more atmospheric, and the laundry function is hidden in built-in furniture. The whole interior combines marble, wood, black, beige and gold. This is a good example showing that a 7.37m2 bathroom does not have to be a compromise. It can be functional, family-friendly and very elegant at the same time, provided it is designed as a complete whole from the beginning. ## Checklist before implementing a similar bathroom - Check whether the layout allows comfortable use of the bathtub, toilet and washbasin. - Plan space for the washing machine and dryer already at the concept stage. - Decide whether one larger washbasin or two separate basins will work better. - Provide space for towels, cosmetics, cleaning products and a laundry basket. - Choose a maximum of 2–3 main finishing materials. - Plan several lighting scenes, not just one ceiling lamp. - Check whether built-in furniture allows convenient service access. ## FAQ – frequently asked questions about a 7.37m2 bathroom with a bathtub and laundry area ## Can a 7.37m2 bathroom fit a bathtub and laundry area? Yes, but only with a good layout. A vertical unit works best, with the washing machine and dryer stacked one above the other. This saves space and maintains visual order. ## Does a double washbasin make sense in a family bathroom? Yes, especially for a family of four. Two washbasins make morning routines easier and allow two people to use the bathroom comfortably at the same time. ## Will dark marble overwhelm the bathroom? No, as long as it is well balanced. In this project, we used dark slabs mainly in the bathtub area, while the rest of the interior was brightened with light marble, beige tones, wood and LED lighting. ## How to hide a washing machine and dryer in an elegant bathroom? The best solution is custom built-in furniture. It can have full fronts, fluted fronts, lacquered fronts or smoked glass. It is important to provide ventilation and convenient access to the appliances. ## Are gold fixtures practical? Gold fixtures can be practical if you choose good-quality products and maintain them properly. In this project, gold acts as an elegant accent that warms up the entire arrangement. ## What is more important: tiles or layout? The layout. Even the most beautiful materials will not help if the bathroom is uncomfortable. That is why we always start with function and only then build the interior style. ## Summary and recommendation A 7.37m2 bathroom with a bathtub and laundry area can be comfortable, elegant and well organised. The key is comprehensive design: layout, storage, materials, lighting and details all need to work together. In this project, we combined the needs of a family of four with the aesthetics of modern elegance. Light marble, dark greys, black, wood, beige tones and gold accents created an interior that is striking, yet still friendly in everyday use. If you are looking for more inspiration and want to see other [ready-made bathroom designs](https://f-projektow.pl/en/blog/category/aranzacje-lazienki-i-inspiracje-lazienki-pomysly-trendy-i-praktyczne-rozwiazania.html), check out our project gallery. And if you are planning your own bathroom and want to avoid costly mistakes, we can prepare a design tailored to your interior, needs and lifestyle. **Fabryka Projektów Team** – we design interiors online based on the real needs of our clients. We create functional and aesthetic spaces tailored to their lifestyle. **Publication date:** 28.04.2026 **Last updated:** 28.04.2026