The best part of Federico's apartment is an unbeatable location - maybe 5 minute walk to the Duomo, 1 minute to the Ponte Vecchio, 3 minutes to Uffizi. There's a mini mart next door for a drink and a Carrefour Express just a few minutes away if you want to stock up on some necessities.
The apartment is small - open the door and there's the couch. A small sitting area where we left our suitcases. Combined with kitchen. But it was great to have a fridge for the meats and cheeses we bought plus some breakfast for the morning. The bathroom is adequate though we had shower issues - there needs to be a strip of rubber added to the doors because there's a sliver between the shower doors and the floor gets soaked so we had to turn the shower on and off not to make a mess.
Everything was clean and spotless and check in/out was very easy.
I think this was a great option for our two nights in Florence.