We had a good time in Prague. Petr is very fast in answering your questions, gives you before you arrive extended information of how to get to the Airbnb and in our bedroom was a lot of useful information about what to do in Prague, where to eat in in the surroundings etc.
However, the pictures look very different from the apartment. The bedroom is tidy and clean, but the shared bathrooms are really not clean. I understand that it is a commom space and that it is maybe more difficult to keep that clean with all the guests coming and going, but this could be better.
Overall we had a good experience, Prague is a great city and Petr seems very kind and helpful. Just keep in mind that the bathroom is not as nice as you expect.