Wonderful location !
3 bedrooms with comfortable beds. Everything was clean and tidy. The kitchen looks perfect to cook. We didn't use it so I cannot confirm that everything needed was there but it looked ideal !
The sauna is an incredible add-on, it is not big but perfect to relax 3 to 4 at a time. The shower is really big, there is a washing machine.
I cannot see anything to complain about the apartment.
For the location, it is close from the big television tower you see from everywhere so it is a bit apart from the center but with the developed subway it is not a problem at all and the Uber are really reactive and cost nothing in Praha (2€50 for almost 10 minutes).
We were a group of 10 people and it was amazing ! I strongly recommend !