I stayed at this inn this spring, well before the main season. The owner was not in residence and I was the only guest. A young man from India with the nickname "Vikky" (that's my guess on the spelling) was the host. Vikky is an all around handy man here and also greets the guests and serves dinner. His brother in law is the cook (and also has 3 adorable identical daughters around age 3). I felt a bit like old royalty while I was here. I had the run of the property and Vikky was ever the friendly host (and the house cat spent quite a bit of time on my lap as well).
The first night I had dinner there (they were expecting two other guests but I guess they were no shows). So, I ate alone, with a bottle of wine just for me, served by Vikky.....it was easy to feel like royalty. The next couple of nights they pulled the plug on dinner (happily some semblance of efficiency has arrived at least in some parts of Italy), and so I dined at La Torretta down the street -- I was the only customer there too (see my review of the restaurant separately).
The inn is an old country house of privilege back in the day, and it remains in the hands of the same family. To see the fate of these old houses, look no further that across the street. One grand old house has been torched, while the other is abandoned gradually deteriorating as time goes by.
You should not expect the Ritz Carlton. This is an old house that has been converted to an inn, so there are compromises in lots of places. What distinguishes this property is the opportunity is affords you to get some feel for the way the one-percenters of yesteryear used to live. All the pictures of the property are accurate. It is a nice property with nice views. And Giungano is a very nice little town -- extremely clean and surprisingly rich in public areas (I had the feeling that someone important lived around here).
The inn is ideally suited to visit Paestum (only about 30 minutes away). You also can drive over various country roads to get a feel for this part of Italy. Or, of course, you can just hang out at the inn and Giungano for a couple of days and take the opportunity to relax in style.