Excellent communication from the host with good advice. Pictures represent the place well and the lofty rooms are rather grand. Despite it being -4 degrees at night, the apartment maintained a good temperature. The shower was as hot as you wanted it to be and everything worked well.
Both reps that we met at the Ruterrra main office were very helpful, especially Thomas who greeted us. He gave us good advice about where to go, how much to expect to pay, which beer was good and where to eat etc. They dropped off an extra bed sheet and pillow case so we could make up the third bed, we hadn't been clear about how many beds we wanted made up but they sorted it very quickly.
All in all a good stay and Prague is just wonderful at this time of year but dress warm!