I have nothing to say about the location, it just perfect. Inside the old city, near the river, by walking you can reach most of the famous points. I believe it is calm even this is not true during our stay because some work in the street, but at night, it is good. The apartment is big enough for our 4 people family, in fact much bigger than expected, very high roof feel nice. Everything is clean and ready to use, furniture and decorations with high quality. Kitchen well equipped, office just downstairs, easy to reach and talk with. Fast problem resolve as our gas was cut the second day because of the work outside. Ladies are very nice and helpful, even they included instruction on how to use the washing machine, in fact it is very helpful :)
The only problem is the sofabed in one bedroom little damaged maybe because of old or other reasons , we changed to another one in the living room, everything fine.
Anyway, this is a happy trip and stay in Prague , a beautiful city and nice apartment.