The place is amazing. Great interior, sparkling clean and modern. The building has an elevator and a parking spot for our car!! Such a huge help when travelling with children.
Also, there is a supermarket (in the same building) so if your travelling on a budget you will be very pleased with it. The kitchen appliances will let you cook whatever you want.
The location is perfect. Just a walking distance from the main tourist sights (that's so close that we walked there with our children).
The host is very helpful, providing us with video and photo instructions, so when we got there we felt as if we had already been there before.
If I ever go back to Prague this is the first place availability of which I'll check.