Awesome apartment in the center, we did everything by walking ! There is a local restaurant and a bar right downstair the apartment ! The street was less noisy than we expected as said in other comments (there are double window).
Prague is great too, we had a fun trip, but the biggest problem stays all these hordes of drunk english and german guys who come for stag party and have no respect for people over there.
Thank you Alena for your great apartment, I definitely recommend !