Great location, but extremely difficult and expensive to park. Parking is €25/day which is more than a family meal in Prague. Apartment is spacious and comfortable, but it's difficult to get everything up to the apartment itself, elevator is VERY small. Not the safest space for young children. Host also charges if you ask for pack-n-plays, and other children accomodations.
Loved how close it was to sites, but not sure we would stay in same place if given a choice.