A great apartment, close to everything you want to see. Spotless clean, with everything you need inside. Magnus is a great host, his service was excellent and beyond, check-in was friendly and swift, and we got lots of local tips.
The downside - the cafe across the street causes noise at night (people, not cars), which was a bit too much. Perhaps I was unfortunate, and apparently this can't really be avoided in the center of Prague.