Had a great stay at Cristiana's apartment in beautiful Oltrarno. She definitely has the best internet speeds of any of my previous Italian stays and the apartment is comfortable. She's a great host who was accommodating and helpful.
Two other notes:
For those that are light sleepers, I'd suggest bringing some ear plugs if you're going to be staying over the weekend. It can get noisy on Saturday night. This may be true of the neighborhood generally, and not this street in particular.
Second, depending on the time of year, I'd suggest bringing some warm socks to wear in the apartment as the floor can be cold.