Great position, in Mestre at less than 5 mins from the train station and bus stop. The hosts were nice and communicative and helped us with information about the train schedule and even recommended a nice restaurant close to the house.
As for the conditions, the room is in an old house that makes a lot of noise, but is clean and comfortable, perfect for a city break in Venice.
One minus is that they charge 10 euros per bag if you want to leave your luggage there before the check-in time. I feel this service should be free since you're going to check-in later that day, but you can find spots at hotels in Venice that charge only 5 per bag for 24h storage. Also, the check-in is only until 8PM and they charge an extra 15 euros if you want to check-in later.
Overall, it was a nice place. Congrats to Fosca and Enrico :)