Mary and Marina have done a fantastic job with their place on Pitti Piazza. My husband and I stayed for one week. Communication was clear and prompt. The apartment is in a central location yet very quiet. It has a well-stocked kitchen, with the basics to cook and also soap to do your laundry. The kitchen is small but well laid out. We cooked a few meals there and it was perfect for our needs. The wifi is extremely fast as well!
Overall, I can highly recommend staying in Mary and Marina's apartment!