Jiri & Hela flat is perfectly situated in pragua center. There's tram and subway close to it even is everything is on a walking distance. Even if we didn't meet Jiri & Hela in person they always respond fast to your questions or your requests the best they can. The flat itself is very bright, calm, very very agreable. A little bit too much maybe considering it makes it hard to leave it to visit town :)
we also used Jiri & hela tips and went to 2 of their restaurants and we were happy to follow their advices. Highly recommanded