The hotel is conveniently located if arriving late to Olbia and wanting to travel to the west. It's only 5-10 min drive from the airport and close to the main roads to the west. The room was clean and the bed comfortable, we also had a nice balcony. It was a bit difficult to find the hotel. There is a sign on the road, which states accommodation / rooms, but the name Piazzetta is not visible on the sign. Since the building is actually a apartment building and the guesthouse only occupies one of the floors, it can easily be a bit confusing. At the doorway (when you find it) there is a sign stating Guesthouse Piazzetta. Check in is via a mobile phone. Even though the instructions were good, we had some challenges to open the door. Maybe it was because of our mobile phone or we did not understand the instructions. In any case, Antonio was friendly and helped us also later in the evening when we returned from our dinner and the mobile app did not respond to our tries to open the door. You can pay the room at the cafe on the street level (if the cafe is open) or by credit card. This needs to be agreed with Antonio beforehand. Giving only 3 stars, because of the challenges to open the door, although I acknowledge it could be our own fault that we just did not understand how to operate the application. Otherwise as said, the room was good, the location was perfect for us for a one night stay (and there is also a very nice pizzeria just 100 meters from the hotel).