Our stay was great. The apartment was one of the nicest furnished Airbnb's I've been in. Beautiful stone floors and stairs, a well-equipped kitchen with a very fast induction cooktop, and a beautiful shower. The back patio area is really nice too, though we didn't try it out.
Franc was also very friendly. He was easy to communicate with via messages and he was around the building some days doing work, and said hello.
The one downside was the noise. Apartments in Europe tend to be a little less sound-proofed than North American ones, but this apartment has very thin walls. Being located at the front of the building of the first floor means you'll hear everyone coming in and out, any construction, new guests, or cleaning or showering on the floors above. If you're a heavy sleeper it should be fine, but if you're a light sleeper or sensitive to noise, be aware!