The Blue Line (Mėlyna linija) is a loft apartment in Užupis intended for rent. Design of complex space of the apartment has required exceptional solutions. Very high ceiling was in one corner of the apartment, while a depressing small height, dark corner without natural lighting was in another corner of the apartment. The apartment has only two small windows in the residential area. Thus, major attention was paid to artificial lighting of the apartment. Elements sort of going down are formed in the slope ceiling of the roof with integrated hidden light emitting diode lighting to the ceiling and directional luminaires are directed downward. Blue accent line goes throughout the entire apartment, this is integrated cabinets, kitchen domestic appliances, shelves of the sitting room, radiator grilles etc. Hidden lighting is also integrated in the blue line, at the lowest part of the space. Rust effect volume separating the area of the sitting room from the lounge and partially closes the attic area is also an important element of the interior; a cabinet of the lounge, TV furniture are also integrated in it. A guest or rest area is fitted on the first floor.