Short review: great location, clean apartment, no hot water, terrible AC, cheap host
Detailed review: the location of the apartment was great. Situated in a quiet neighborhood, away from tourists, with many local stores, bars, cafes, and restaurants nearby. Supermarket, drug stores, and convenient stores also close by. Still close to tourist attractions (5 min: Palazzo Pitti, 10: Ponte Vecchio, 15 min: Duomo). The apartment was pretty and clean, and the wi-fi worked well. The bed was large and comfortable, the closet big enough for two people's wardrobes.
However, the negative parts of the apartment made it impossible to truly enjoy our stay. There was no hot water in the shower, not even lukewarm. Plus, the shower head's water pressure was extremely low, so we had to use the sink in the kitchen to wash our hair. The bidet's water pressure was also low so we couldn't properly use it.
The AC in the bedroom was a joke, that's the only way to describe it. This very old machine barely did its job of cooling down the bedroom, let alone the whole apartment. Plus, it made so much noise, we had trouble sleeping. There are two sets of pillows in the apartment. The first set was actually cushions, not pillows, very thick and hard, impossible to sleep on. The second set of pillows were actual pillows, but they were so old and dirty, I honestly think they are from last century and have never ever been washed.
Some of the pans in the kitchen were really used and scratched up to the point that it was clearly unsafe to use. The weighing scale provided wasn't working. There was no pepper even though it was mentioned in the listing. There was no olive oil either, instead there was a very cheap-tasting sunflower oil, and the vinegar looked very cheap as well.
There are no dedicated workspace, even though it is mentioned in the listing. The listing also says it's for up for 4 people. I would not recommend it if you are more than 2 people though. The fridge is very small (good for 2 people but that's enough) so unless you're planning to eat at a restaurant three times a day, you will need to go grocery shopping very often. The listing mentions a few things fitted for babies or young children. I would however not recommend this place for families as there are steps between the hallway and the kitchen, and in the bathroom as well, which makes it unsafe for young children. The two flights of stairs in the building are also very narrow, so I don't see how a stroller could fit.
Some of the above might sound like small details, but when you're booking a place from a super host, you expect something great. And all of this gives you the impression that the owner is trying to save money as much as he could, at the expense of the renter's comfort and experience.