The apartment is lovely; it's a studio, but pretty spacious and modern, has everything you need. It's also close to the castle, and walking distance from old town (though you have to walk up and downhill to transportation, so keep that in mind, we were up for lots of walking so it was nice).
In the morning it can be kinda noisy, which wasn't too great since it was warm and we needed to keep the window open. But it's nothing like downtown, just on top of some restaurants and there are tour groups coming and going at all times.
Daniela was a great host, very accommodating and made sure we had the best experience possible. She lives in the building, which is an advantage if you need anything.