Mario's apartment is in a great location. There are simple, inexpensive restaurants and wonderful wine bars/shops within a few minutes walking. It's also close to tram, bus and metro stops, meaning you can get to the center and historic sites easily. The location also gives you a much more 'real' experience than you're likely to get in more heavily touristed areas. Feels very safe.
The apartment itself is great for longer stays. There's plenty of room, great storage and a small kitchenette. Bed is comfy and bathroom is quite spacious. Strong wifi. Really couldn't have asked for anything more and I hope to be able tor return.