My wife and I stayed at Marino's in June 2017. We went for it because it looked clean, comfortable, and had fantastic reviews with a great price. We were not disappointed!
The apartment itself is clean, tidy, minimal clutter, and very spacious. It's on a ground floor but with secure windows. Exactly what we were expecting/ hoping for from the pictures.
But the real stars of the stay were firstly Marino, and secondly the area the apartment is in.
Marino was very friendly, he arranged with me where and when to meet and walked us to the apartment. He was genial, friendly, fun, and informative. He showed us around, answered our questions, gave us recommendations, and then left us in peace to enjoy Venice. He was always at the end of the phone and best of all, after we had checked out he went out of his way to contact us when we left something behind so we could go back to retrieve it. First class host.
The other highlight was the area the apartment is in - Cannaregio is quiet, but really close to shopping streets and also a few nice restaurants on the water front. It was lovely to come back to after the madness of San Marco etc., and it was within easy walk of the main stations when we arrived. Also there's a smashing bakery really close who do great bread.
To summarise, highly recommended!