We stayed here for two nights. We arrived in the middle of the night and the check-in worked well with the code. The apartment has a great location and we were able to walk around easily and travel with the bus and train. There is also a lovely cafe downstairs.
Unfortunately there was basically no soundproofing so you can hear the traffic outside and even the neighbors fighting during the night. The bed side lamps didn't work, which would have been handy.
If you want to have a good location and a roof on top for a few days, this is great. Otherwise the apartment was very basic and if I stayed in the city longer than two days, I would find something else.