i spent a month here in david's apartment. for the cost of the place - given its size, location, and the summer season, it's a steal.
their ad says it all - it is a very old place, so heads up and expect some chips in the paint, some old furniture, etc. however, they are also right - it is charming and i really appreciate the whole feel and look of the place. it IS prague. so overall, when it comes to the appearance, i loved it.
they might have to update some of the amenities that are stated in their ad though. it says that they don't have a washer/dryer but the place comes with a washer/dryer in one. i didn't see a hairdryer though, as well as shampoo, but there was hand and dishwashing soap. for the wifi, the speed is decent but can only be detected in the dining/working area so connection is poor in the bedroom.
overall, i was very happy with my stay. they are very nice people and are responsive. :D