We really enjoyed staying at Veronica's apartment. It is located in a renovated old building with high ceilings and has a very nice little terrace. The whole flat is tastefully decorated and very clean.
Veronica was a great host and super helpful when we had questions.
Although the apartment is not very close to the city center, you can get there quickly with a bus/tram leaving close to the building and terminating at Piazza Venezia.