It's a great, modern apartment right in the center of the old town. We stayed for 2 months and loved the place. That said, there is two things worth mentioning:
1) From the bedroom you really hear every sound from the apartment above, especially the toilet flushing and the entrance door (which is right on other side of the wall from your bed). The good news is: the upstairs tenant is only around Tuesday - Thursday/Friday and only in the evenings/morning. The bad news is: he gets up at 5am, flushes multiple times before heading in and out a few times (with the door slamming right next to your bed at least 3 times between 5 and 7!). I'm a somewhat light sleeper and every day he was around, I was woken up multiple times between 5am and 7am (which is when he leaves for work). We put up a sign and he he paid somewhat attention to not slamming it too hard, but it still woke us up every time.
2) The second thing to consider: if you're planning to do regular grocery shopping without a car, it's a 20 min walk down (and later up) a very steep hill. Note: There's a smaller supermarket a little closer.
Despite that, we would definitely stay there again, it's a great place, especially for the days of Thursday-Tuesday or shorter trips that don't require a lot of shopping. But for long term stays I would probably look somewhere closer to the supermarkets.