My SO and I stayed for 13 in Rome, in Silvia's house.
PROS
Since the beginning, communication flew nicely and the host received us with tips on where to eat and go.
The apartment was very new and there were all the kitchen tools and supplies (fridge, freezer, stove, dishwasher, pans...) we needed for our 13-day stay (many seemed to never have been used before).
Bedroom and bathroom are nice (including basics such as shampoo, hairdryer to extras such as washing machine). The house accommodates well a couple.
CONS
The con is that the location is not the most central (but we knew it before hands). However, the house is close to the metro and ~15 min walking to the train station.