We stayed for 3 nights for a romantic weekend. What a warm spacious stylish apartment! It really was right on Old Town square (so close we could still receive wifi in some parts of the square!). You can clearly see the astronomical clock from several of the flat windows. At the same time, high enough up for it not to be noisy at night. Walking distance to all the major attractions and so much good food nearby too. Petr offered airport pickup for a good price and was very considerate, they really have thought of everything - from recommending local restaurants to leaving eggs and ham in the fridge. The flat felt like a home. Fast wifi too!