We had a great time in Royal Court Hotel. The room was clean and pretty. No noise. The first night, we had a problem with the heat system, but a simple call to the reception and the problem was solved. The bathroom was great. There were many choices at the breakfast; potatoes, cereals, jam, pudding, cooked meats, juices, milk, coffee - but no croissant unfortunately :D
Igor gave us all the necessary information to find our way from the airport to the hotel (about 1h and 32 CZK with public transport).
The welcoming was very professional, the receptionist gave us some information about the neighborhood (with maps), the restaurants and public transport.
The hotel is about 20 minutes away from the centre by foot. The neighborhood is not very touristic but nice. There are a lot of restaurants. Also, don't miss the escape game Mind Maze. It's just a few blocks away. We had a lot of fun there !

Have a nice trip in Prague !