"I can't really give an accurate rating, since we basically checked in and slept until our shuttle to the airport. However, the grounds looked nice and well kept. The hotel serves snacks and breakfast.
They have a 15 euro shuttle that will pick you up at the airport. You can also schedule a shuttle to the airport; ours was at 3 AM and the driver was right on time.
They had a shuttle to the hotel restaurant as well.
I'm not sure it would be ideal for visiting Venice. It's not near public...