I'll start with: I cant find a single bad thing i could say about Due Torri in Abano Terme. Everything was just great. Staff was the politests and the helpful of all I have ever encountered.
Rooms are fantastic. Spa services are very pleasant. Hotel has a doctor who can advise you which spa services are to help you. Swimming pool is really warm and pleasant. It contains thermal water, and although its big size, its not for swimming, but for relaxing and enjoying the spa machines, such as baths (inside pool) water current, waterfalls.
Breakfast was pretty good , i'd give it 4 out 5. Lunch and dinner we didnt try.
For those of you with bad backs, matresses are extremely comfortable. Cleaning is 5/5. Many shops and restaurants around.
You can rent a car as well as return it directly at the hotel reception. They use europcar, and i think there is no extra charge for getting it from hotel.
And final advise: my gps (iGo) couldnt find route to this hotel, because its surrounded byr pedestrian area. So when you get closer change to bycicle mode in your gps, it will then make a route available.You can still drive through pedestrian area, but very slowly.