My room in Salvo Casa had a beautiful view of the canal at the end of the street, and it was good to have a cool breeze and lots of natural light through the window, as the room is very small. The location of the apartment was also very good - about 15 mins walk from Santa Lucia station, and quite close to all the major sites, as well as heaps of good places to eat. It was a vibrant neighbourhood, and could get noisy at night, but was a welcome change from the super-dense busier streets.
Jennifer, the co-host, was excellent with communication, and gave very detailed information on how to get to the apartment, as well as lots of great suggestions for restaurants, bars and supermarkets nearby.
The only downsides I can think of were that the walls were very thin (could hear clanging pots, etc. from the kitchen very clearly), the locks were so old that it was not often easy to actually open the main door to the apartment, and also that I was not made aware of how many others would be sharing the apartment with me at the time. I imagined maybe one or two, but did not realise there was an extra bedroom, so for most of my stay there were five people all sharing a small bathroom and kitchen.
Otherwise though, this was a very nice place :)