Roman was a great host and always responded right away. The normal procedure for checkin is to pick up the keys from his bookstore. However, our plane was delayed causing us to miss our connection to Prague, then we were rebooked on a much later flight, eventually arriving around midnight instead of in the morning. He arranged for us to pick up keys from a friend not far from his place instead. This was a relief as Roman does not live in Prague most of the time.
His place has an Old World charm and has everything you need. We walked everywhere - about 20 minutes or so to Old Town but there is a tram stop nearby if you prefer.
The only thing that might be an issue for some people is the bathroom. The toilet is in a little closet right as you come in and the sink on the other side of the kitchen. The very tall bathtub, with shower, is tucked behind the kitchen. It is a very narrow space between it and the wall. We were ok with it but it might not work for some people.
We enjoyed our stay and think you would too