Anna's apartment is in a quiet courtyard-facing part of a bustling and busy tourist street just below the Castle. It's a lovely place to stay if you're looking to see the sites and be immersed in the historic cobblestone parts of Prague. A bit farther from the more residential / youth-culture areas, which were a long walk but quick tram. There are a few other rooms in this section of the building and sound travels-- but nothing was too disruptive. I was actually surprised by how quiet it was, especially at night. The apartment is so lovely and very nicely furnished. A few things could have been added to the kitchen for longer stays (I stayed over a week) but nothing I couldn't improvise with.
The walk up the hill to the apartment is so scenic and beautiful-- next time I will probably stay in a less touristy area, but I wish I could take the ambiance of the flat with me :)
Definitely recommend this place if you're looking for an artistic and private escape.