Appartment itself was quite OK - clean, well equipped, good Wi-Fi, no problems with hot water, convenient location. Few drawbacks: quite cold inside, despite electric heaters on; in one of bedrooms the bed was really noisy; and in general - the noise from the building's corridor was noticeable, especially at night - we were woken up few times and we didn't feel realy safe.
Also the check in/out hours plus the necessity of key pickup seems not so convenient... but overall, the stay wasn't that bad ;)