The apartment is really nice, with beautiful furniture. The location is great, since you can see the Karl Bridge from the bedroom windows while you read or chat; just great. The tram and the subway are really close (5 minutes walking).
We missed the usual stuff in an apartment: microwave, toaster (having breakfast in Prague is not cheap), broom and the usual things you find in a house that is being lived in. We missed also info about nearby shops, supermarkets and restaurants.
The hosts do their best, but the owner doesn't. His behavior was quite sharp.