We rented family room, which is actually an apartment - with two rooms and bathroom in between (you can actually close doors in each room). Both rooms are very spacious and each room had a mini fridge. Parking is included in the price, but keep in mind that, as others said, that entry to the garage is very, very narrow. We had a Opel Astra SW, and it took us few minutes of careful navigation to ensure we won't scratch either side. It only has few spots inside and you have an option to park on the street as well.
Staff is very friendly, they easily extended our stay by another day (as we found Prague worth staying another day), and the breakfast in the restaurant is awesome - buffet style with lots of food choices. Be sure to order coffee latte (you pay extra) but it is out of this world!!! It has also nice, small bar.
The subway is very close (3 min walk), and variety of stores nearby as well. It is located in suburbs of Prague - but very nice location. Subway ride to downtown is only around 10/15 min.