My partner and I spent two very enjoyable weeks in this apartment. We actually spent a lot of time "at home," because I had to work, and I also love to cook, so we basically lived there, rather than just using it to shower and sleep. It's a genuinely comfortable place to live: first of all, it's amazingly quiet, especially given the restaurants and bars right below it. You hear children playing for a few hours around noon in the kindergarten playground across the street, and that's about it. It was cool enough to sleep with the front window shut and the bedroom window open, and the only time there was any noise was at closing time on Friday nights. There is zero traffic noise, a rare treat for an apartment in the middle of a city.
A few things I couldn't tell from the listing and pictures, all of which turned out to be good: the bedroom can be closed off from the living room by means of a pocket door, and there's a closet in the bedroom (an ingenious double-decker affair with a section of drawers, too) to hang your clothes. The kitchen is well equipped for cooking: the cookware is all nonstick, but of decent quality and in very good shape. I always bring my own chef's knife and moka pot (two items that can be extremely dodgy in rentals), so I can't speak to the quality of either of those, but everything else was fine, even the cutting board. The fridge is tiny, even by Italian apartment fridge standards, and having an oven would have been nice, but the stove is better than most.
Two tips: one, the mattress drove me crazy for the first week, because it seemed to dip severely in the middle and I was sleeping on a slope. We then realized the problem was that the mattress is slightly too big for the bed frame and my partner is much heavier than I am. Once we pulled the overlapping edge of the mattress over to his side, the bed was fine for both of us. And two, the vine-covered bar on the corner of Via Garibaldi, a minute's walk from the apartment, makes some of the best espresso I've ever had in Italy.