The apartment is very spacious and unique. There is something special about really old buildings and this was a great opportunity to stay in one of them. It is located in Centro Storico, close to many cafes, restaurant and Basilica di San Martino.
Francesco and Costante were great hosts and helped us with everything including parking the car (which is not easy in old cities in Italy).
I would definitely recommend Francesco's apartment for anyone who would like to visit Martina Franca (which is definitely worth seeing if you're coming to the area).