We stayed one night at Costanza's place and we had a nice dinner on the patio outside. The kitchen was fully equipped. The thrash bin was not empty but it was not smelly or anything.
Towels and bed linen were provided and clean. The bathroom's conditions were not perfect due to the neighbours, but it was clean and everything was functioning properly.
The timing for the check-in and check-out was flexible (we need flexibility as we were travelling by bus) and calling Costanza was enough for getting the keys: very efficient!
We did not need to contact her for more help or information but she was ready to help us for anything.