If you are looking for a place with a decent price out of Sorrento but close enough even if you don't have a car - this is a great option. This lovely B&B is a 4 minutes walk away from the train station to Sorrento (2 stops and 4 more minutes you are in Sorrento). Piano di Sorrento itself is a nice quiet town, not very fancy yet a good place to relax a bit away from the crowd.
The room was big and comfortable, and except from some noises from the floor above in the morning - it was a great over all experience. They have Wifi that actually works and the standard breakfast.
The staff is extremely nice. I got there very early when only the cleaning lady was there. She didn't speak English but after a short communication attempt we managed to use few words in Spanish and she let me leave my car there. Later on, the guy at the front desk was there and he spoke English and explained everything you need to know about the place and Piano.
I would definitely return to this place if I am around.