The apartment was according to our expectations - quite small, but very cosy. We very much appreciated the location, which was really close (like two minutes) to the Arsenale, where the Art Biennale takes place. It's also quite close to the Giardani, cca 20 minutes of walking. There's also a very lively shopping and restaurant street Via Garibaldi just few minutes away, we went there for a coffee everyday morning and watched the local Venitians enjoying their street life :) This part of town is great if you want to meet some of the locals. The closest vaporetto stop is Giardini.
We never met the hosts in person, but they responded to us very quickly and nicely. They even arranged for us an early check-in, even though they didn't have to. Everything was as they said, we had fresh towels and linen at our disposal when we arrived.
Plus the piano sounds wonderful! :)