The Locanda Marinella is a hidden gem of a B&B which is a lot nicer than some hotels I've stayed in.
It is in a quiet area, and an excellent location if arriving by bus at Piazzale Roma, and is not far from the railway station either. It is also close to a main vaporetto station.
Breakfast is basic continental. I would have liked more choice of cereal and pastries, but there was plenty of it and it is only a minor gripe.
Our en-suite room was spotlessly clean. A nice surprise in the bathroom was fluffy towels not the tea-towel ones you usually get in Italian hotels.
Our hosts were very friendly and helpful and provided us with a map of Venice and advice on where to go, how to get there, and where to eat cheaply. They also gave us an emergency mobile number in case we ran into any problems, and looked after our luggage all day before we caught our evening flight home.
I would highly recommend this hotel (sorry B&B!) to anyone.

We had a delightful stay at Hotel Alloggi Marinella. Rooms are very modern spacious, and quiet. Breakfast was served in a serene terrace or dining room. Staff was always friendly and helpful. The location is close to the bus and train stations and also vaporetto stop. However, it can take 25 minutes for the vaporetto to take you to San Marco, and maybe 40 minutes to get there by foot. But with all the tourists in Venice, we were glad to be in a pleasant and quiet neighborhood.

Our trip to Venice was beautifully completed by staying in Alloggi Marinella. Yes, it was a bit difficult to find, only a 3 minute walk to Piazza Roma, but we took like half an hour to find it as we were not familiar with how the units were classified in Venice! But it IS really quite convenient! It is not right in the middle of where all the tourists are, but i think thats a good thing as we discover the undiscovered parts of Venice.

The hotel - while rustic looking had modern comforts that made us feel welcomed. We were pleasantly surprised to see how big the room is (considering our previous Europe holidaying experiences) and were even more surprised that there is a small living room and a backyard where we could sip wine and eat grapes and salami. Nicola and Daniel were great hosts. We will definitely want to come back here again.

The price was just above our budget, but it was worth it. :)

We stayed here in Sept 2007 and it was a very good experience.

We needed to stay close to Pizzale Roma as we had a very early flight out in the morning and needed to catch the 5am bus to the airport, but actually we found the location to be preferable to the crowds surrounding the San Marco area. It was still only around a 1/2 hour walk to San Marco, but we also enjoyed the area around the hotel and found some lovely restaurants and shops nearby.

The hotel itself was very pleasant. It isnt super fancy but it has everything you need, as well as a few nice touches like English books to borrow. And the hotel is small enough to still feel quiet and cosy.

The rooms were a good size and everything inside was comfortable.

We also found the hotel staff to be very friendly and helpful. Also because we were catching an early flight and would miss breakfast, they stocked our fridge with some water, food, and other breakfast things, which was nice.

I thought it was good value for Venice in Sept (135 euro) and would stay here again.