We had a single room apartment which was enough for our family (2 adults, 2 small children) for 3 days. Good size sofa bed. Kitchenette OK for preparing smaller meals. Nice bathroom. For longer stays I would have taken a 2 room apartment.
The whole area around the building is very well kept and there are lots of tables and chairs if you want to enjoy in the garden. Nice pool with steps in the corner, so small children can also play in it.
You really feel the owners care about the place and their guests. If you have the chance, have dinner at the old villa. It is organised only a few days a week, but very good value.
A car is absolutely recommended to get around. It takes about 10 minutes to drive to Loro Ciuffenna.