We stayed in apartement Maja for five nightes just a weak ago. It's located in Kazimierz, not far from Wawel Castle (lazy stroll will take 5 - 7 minutes). There was no problem with dropping off the bags while the place was cleaned early in the morning, just a simple phone call a day prior to comming can sort everything. I agree that hot water tank is small and can cause some dissatisfaction however the company ( yourplace.pl) is honest about it when booking. The design of the apartment is very modern and comfortably designed by artistic group 'Miejsce'. It can accomodate up to 4 people although it was only two of us and we never checked the quality of the sofa that could be converted into double bed. Great spot, ighly recommended.