Hey.
B&B Rota is VERY disappointing, at least for us. If you are only there for a day (like we were) and need a good location to save time, it is pretty good for that. Otherwise, the shower was SO dirty neither my father or I would shower in the morning, we waited until we got to Milan. It is VERY loud at night, but bearable.
If you are staying a few days in Venice, I would absolutely book at Club Hotel Venice instead, it is on Mestre, and a 20 min bus ride away from Piazzale Roma, but we got a dbl room for 50 EUR a night, and it is a 3 star hotel! If you can find it for cheap here or on Venere.com, I would definitely recommend that instead! If you book on venere use D45WPFE for a 4% discount. Happy travels!