Do you have Hilton points? If so, consider the Hilton in Sorrento. We used it as a base a number of years back and had a wonderful time exploring the area. No, it's not the same as actually staying in a hotel in the middle of the Amalfi Coast which we have subsequently done. But it gave easy access to a broad array of sights including Pompeii and we enjoyed it very much. If you can access the executive lounge, it has a expansive terrace with a great view over the water.