We stayed to adults and a child in Jaroslavs appartement for 4 nights.
It is a really nice place with its two separate bedrooms and the check in/out-process was very smooth and professional.
The placement is EXCELLENT. Safe neighborhood, very close to metro and tram, just a 5 minute walk. And you can easily walk downtown in 15 minutes. Lots of good places to eat inside a 5 minute radius, and a couple of places serving breakfast as well.
Highly recommended appartement, will be our first choice if we ever get a chance to visit Prague again.