We stayed at the flat for 1 month and really enjoyed it. We felt at home, we were free to move the furniture around and make the place our own. There were some problems with the hot water and Internet, but they were very quickly resolved, thanks to our wonderful host. Including providing us with our own WiFi spot!
I would also like to mention the heating. It is excellent. We lived in the flat during a very cold period and it was always warm and cozy inside.
We definitely enjoyed our stay!