We (2 friends traveling) highly recommend Modestino’s place! Perfectly located in the lively Oltrarno but on a quiet street. The weekend we visited it was pretty hot in the city, but the terrace was lovely and in the shade. Very tranquil courtyard above a yoga school.
The apartment is big and has everything you need. Modestino was a very pleasant host. He was there within 5 minutes when we needed something. We will definitely come back :)