We very much enjoyed staying in the apartment. It was super clean, modern, and spacious for our family of 4. It was also very well located, on a quiet street walking distance to all of the major attractions. The apartment itself exceeded our expectations. There were just a couple of minor annoyances: (1) the key to the front door of the building was extremely hard to use, even after we exchanged the first set for another one, and (2) there was no flexibility on check-in and check-out times and no ability to store luggage. We ended up paying a total of 25 euro for luggage storage because we arrived a few hours earlier than the 4 pm check-in time and left Prague a few hours past the 10 am check-out time. The luggage storage facility that Prague Days initially recommended was located across the river, not at all convenient to the apartment. That said, the apartment was beautiful, and we would recommend it so long as the check-in/check-out times fit your travel itinerary.