We had a delightful time staying at this Airbnb--it was one of the nicest I've stayed at. The apartment was beautiful, spacious, and well-situated. It's just a 5-minute walk from Prague's Old Town Square, about 15-20 mins from the Charles Bridge, and within spitting distance of a number of tasty restaurants. The host made check-in and check-out easy and simple with instructions and reasonably quick response times. The place was immaculately clean and the host had even left us some delicious complimentary donuts for our stay--a very nice touch.
The only downside is the flat is located two doors down from a rather raucous nightclub. If you're a heavy sleeper/used to living in the city, it's unlikely this would bother you (I slept through the night just fine), but my girlfriend was woken up multiple times during our stay, sadly. That said, it shouldn't be a deal breaker--this was an absolutely lovely stay and the host was great.