My wife and I spent a wonderful week here. Our room was small but spotlessly cleaned every day, with clean sheets/towels. Lovely side lake view. Staff were all friendly and the buffet breakfast and evening meals were substantial, varied, tasty and seconds always available. Only grumble was the coffee from an automatic machine, horrible. However an expresso from the bar was only 1 euro.
Swimming pools were crowded, and sunbeds very close together, but there are quieter areas around the hotel grounds.
Passagnano is a lovely little lakeside town with several nice bars.
A ferry trip to the Isola Maggiore is a must.

I stayed at this hotel for 3 weeks while in town for business. I found the buffet style breakfast and dinner convienent. I thought the food was good (for buffet style) with a lot of variety available. The dining service was also good (quick plate removal, friendly staff, etc).
This hotel is packed with vacationing families. Don't stay here if you don't like seeing/hearing kids. They do have activities for them throughout the day/night which is a good thing.
The hotel is laid out on a few different levels (due to building additions). Both rooms I stayed in were on the floor which was not accessible by an elevator, so I had to drag all my luggage up 1.5 flights of stairs and there was no porter to help me. With no AC in the hallway areas, this was a very sweaty and frustrating endeavor.
The AC in the rooms was very unpredictable. It would never stay on for a consistent time. Sometimes it would shut off after 2 minutes and sometimes it would shut off in the middle of the night or stay on all night. I was never able to figure it out. The shower was TINY, but the bathroom was clean. Each room has a mini-fridge which is convienent for keeping water, etc. The TV in my room was TINY and mounted up in the corner, so some things (like text on the screen) were very hard to see.
Being a business traveler it was very annoying for me to not have internet access in my room. Access is only available in the lobby and a small price is charged. Some type of fitness center/treadmill, would have been very nice. I don't think it would be difficult to have some type of fitness room esp. in a "4 star" hotel.

Overall a decent hotel with good service, but definitely a couple annoying things.

Booked an Inghams break through Voyage Prive at £1,000 for two flying from Manchester.
Flight with Jet2.com was an hour delayed in both directions.
At Rome airport it was slightly chaotic but eventually met up with Ingham's rep Federica.
Coach trip to Passignano was fine, good careful driver (Carlo) and a comfort stop for a snack at a pizza fast food joint.
Check in uneventful

Location - an easy walk to the railway station and town.

The room - partial lake views, smallish room with one easy chair. safe, old style TV (did not use it)
Bathroom, shower only, thin plastic cups.

Hotel facilities are limited unless you lie around the pool with the families.
Hotel is very popular with Belgian families (Walloon and Flemish)

The food - In the coach the rep promised us fresh local food and great wines. Not in this hotel where it is generally pretty poor. Virtually no local fresh produce. Common denominator buffet fodder. No fresh coffee or juice at breakfast. Packed lunch is inedible. After one day we chose to eat lunch in restaurants and nibble in the evenings. Wine, beer and soft drinks on tap. Red wine was OKish.

As a base for visiting the region (we hired a car in Perugia) the hotel is fine. As a hotel experience, avoid it. Pay a bit more somewhere else.

We have just returned from a very enjoyable two week stay. All the staff without exeption were polite and eager to please. The food was absolutely fine. Three pasta dishes, two meat dishes and a fish dish every day, as well as a huge buffet of salads, cheeses and meats. I drank the white wine with my meals and was perfectly happy with it. Clean sheets every three days and towels every day if needed. The pool had plenty of sun loungers and although some people 'booked' theirs with a towel I did see a staff member collect all the towels up one day so this is discouraged. There were a number of pool activities particularly for young people which was good if that is your thing. We used the beds by the childrens pool which was quieter. Evenings were quiet but it was pleasant to sit outside and the walk to town is easy and short. Bring mosquito spray though. We had a car with us and travelled around, driving was easy and there were really beautiful places to see. For a reasonabley priced relaxed holiday I would definitely reccommend the hotel.