We absolutely recommend to stay in this wonderful apartment. It's easy to communicate with the hostess and she answers quickly. We didn't see her in person, but she seemed really friendly.
The apartment is clean and has everything you need and on top of that there's a great view of Prague. The interior was nice and during our visite it was even decorated with some small Christmas items.
It isn't located in the city center, but within a few minutes you're at the Flora metro station. So you can get to the center quite fast.