We were group of 6 friends and managed to stay there comfortable for 1 1 nights.
Place is spacious, tidy and in a great location, just a walking distance to San Marco and Vaporetto stop. Check in and check out was easy. Internet connection (extra fee) was very reliable. Things like iron, cutlery, plates, pans, sheets, towels, shampoo soap, toilet paper are all provided. AC works good, theres a fridge, dishwasher, hob and washing machine.
Steps to the flat on the top floor are very steep, bear that mind when arriving with big and heavy suitcase. There's also minor inconvenience with the noise coming out of the street side, especially in the morning. But this shouldn't be a problem for an early bird. Extra bed was not that comfortable and it's better to sleep on a sofa in a living room.