Some good points, some issues. One thing that sucked was that when booking, we filtered the search for hotels with a pool. Hotels.com lied to us. No pool. There was a rooftop jacuzzi that you had to pay a ridiculous amount to rent by the hour.
Hotel is quite walkable to the beach.
The buffet breakfast was very good, something for everyone and generous hours (till noon).
Service from the front desk and small bar was very good, too.
Beds were not too comfortable; I woke up with a backache.
The most disturbing thing was that there are cameras in every guest room. How do I know? Because the room next to us was a jacuzzi room and the moron in the room twice overfilled the jacuzzi, flooding the hallway outside our room. When my husband reported it to the front desk, the attendant pulled up on his computer screen the inside of that room. Not sure how or when or if they turn off the cameras, but it felt like an invasion of privacy that the cameras even were there.
So we had a really mixed experience. If I came back to Rimini (and I doubt I will), I'd book a different hotel.