The location was quite hard to find but in the end close to the vaporetto stop "Riva di Biasio" and also not too far from "Piazzale Roma".
The room was big with a comfy bed and a clean bathroom, but a bit of a musty smell. At night we heard people yelling in the street, right in front of the appartement (this might be an exception).
Valter was very friendly and let us store our luggage after check-out time until midday.
Overall, for a short stay these rooms are a good offer.