This apartment was amazing. We booked on the last week before or trip due to some complications with our travel that had the trip in jeopardy. Martin was quick, communicative, and helpful in our booking and after. After staying there, I'm honestly surprised it was available. It's an ideal location and quality if Old Town Prague is your primary goal in traveling to Prague. All I can think is that folks see the location and think it will be a nightmare with sound due to the crowds. Let me set your mind at ease, it is near silent when you close the windows. Honestly it's impressive how well the walls and windows keep a crowd filling the square to nothing on the apartment. The hosts have a clean and beautifully accommodated apartment. They are thoughtful in their info and advice. The only downside is that it is 4 fights of stairs up to the apartment. With that said, it's completely manageable, and if you're in Prague you're likely expecting lots of steps in such a hilly old city.
If you were looking for a great place to stay, for a fair price, do not hesitate to book Martin's apartment.