We stayed at Hotel Duca D'aosta for 5 nights over new year. The staff were all really friendly and helpful and the room was spacious and clean with a brilliant shower. The only neg of the hotel is the breakfast but there is so many other places to eat this didnt matter much to us. Duca D'aosta is in Mogliano Veneto which is an easy 15 min train journey from Venice. Trains are fast and frequent. Mogliano Veneto itself is a gorgeous little town with lovely shops and a market. We got a great deal flights/accomm with thomascook and if you can stay in Mogliano Veneto I def recommend Duca D'aosta.
Directions: Get the Treviso train from Venice. Get off at first stop Mogliano Veneto. Turn left out the train station, then first right and right again. You cant miss it.