The apartment was perfect for our group of five friends. Once we got the internet working (there was a problem with the plug socket), wifi was very good. There is adequate kitchen equipment for prepping food, and we found the extra attic space up the stairs was the best spot for drying laundry on the airer provided.
The location is fantastic, even if finding it was difficult at first, as it is tucked down a narrow alley. The key markers for accessing the alley are the Ponte dei Miracoli at one end, and a toy shop at the other. But Rialto is about a 10-minute walk (depending on crowds - useful for several of the main vaporetti stops), while the Arsenale and Giardini (for the Biennale arts festival) and Accademia bridge are all within a 35-40 minute walk away if you have reliable map apps.
There are plenty of bars (including for cicchetti), cafés and restaurants, and a couple of supermarkets, nearby.
Check-in was fairly straightforward, and communication with Fabio (who helped arrange things in Bruno’s absence) nearer our arrival was great.
To sum up, a very good choice for a family or group of friends, so long as they can cope with the stairs up to the top floor.