Myself and my boyfriend traveled to Ischia in June and stayed in Grifo for ten nights, on arrival to the island we were greeted by the lovely Nico who picked us up from the hotel's free shuttle service (provided every day).
The location is just outside Ischia Porto you can easily walk to the port in day time but would probably not recommend at night, with the hotel offering the shuttle bus service we did not have to worry too much about this. We stayed in a double room where we had the view to both the stunning mountains and sea, for most of our days that we spent by the pool we pretty much had it all by ourselves.
The only few points I would have would be recommend to improve would be the breakfast and the music by the pool; the breakfast was basic which is fine but on a few occasions the cold meat was off and the fresh fruit was not fresh. The pool area is very clean and well maintained but if you intend to relax there all day be ready to listen to the music that is on repeat over and over again :)
The staff are really friendly and are happy to give you all the information and recommendations on where to eat and see on the island.
If you are looking for a relaxing, chilled out and quiet hotel I would highly recommend.
Hopefully we will back to again one day.