Me and my boyfriend stayed at Vincent's apartment for three nights during our second visit to Prague. This is an apartment within Vincent's apartment own - you have to go through his apartment to enter the second. Once inside everything is private (apart from the toilet which is part of Vincent's own apartment). Personally however, we didn't mind this.
The location here can't be beaten, it's a two minute walk from the Old Town square with plenty of bars and restaurants along the way. Also, the size of the apartment itself is great and would easily sleep four people.
We thoroughly enjoyed our stay and would definitely stay here again. Vincent and his assistant were great hosts. They provided plenty of information regarding day trips and activities.
We would definitely recommend this as the perfect place to stay for both those who are new to Prague and those who have been before. The value for money here was beyond anything we could expect.