I stayed for 10 days during Carnevale 2018 and felt completely safe day or night. Located between St Marks, Rialto, & Fondamenta Nove it’s a pleasant walk to all 3. Electricity is expensive so I don’t mind being respectful of it and not wasteful of it. The place is minimalist, clean, convenient, safe, easy. I brought my own coffee, tea, sugar, milk, etc. you will not be doing any real cooking. It worked for me. Since I was there in winter, the hot water took about an hour to get hot, but was adequate once I got the hang of it. In the middle of everything yet secluded, I loved my stay and felt like a local. There is a small grocery store nearby and the veg market in the square has great produce & very friendly.
Every single thing in Venice is brought in by small boats and foot powered hand carts, so naturally things are expensive. It is an enchanting place and this location can let you experience it all.