We stayed at Peter's apartment and had a wonderful time.
The apartment is very nice (description in the ad corresponds to reality), clean, comfy and very accommodating.
It is in a good location and is very easy to find using public transports.
Peter was a very thoughtful host who has been friendly and very helpful. He always replied to our messages within an hour so there was no problem in arranging check in/check out etc and getting directions/tips.
I would recommend this to anyone who is in Prague