I have recently returned from a 4 night stay in Prague with a friend and would highly recommend this apartment. The location is brilliant - round the corner from Wenceslas square and 5/10 minute walk to the old town square. The check in process was secure and easy to follow. The apartment is very clean.
The only downside was the lack of hot water. There was only enough hot water for one 4/5 minute shower each morning. You then have to wait a few hours for the water to heat back up so one of us would have to shower in the morning and the other one would shower in the evening.