Great apartment, excellent very organized host.
Large space (especially for Venice), beautiful views, modern furnishings/appliances. Master bedroom is huge, second bedroom quite small but that was adequate for our purposes (two kids 12 and 14 slept there). Full size adults might struggle in that room, though, depending on their needs.
Great location, in a (for Venice) not as touristy neighborhood with lots of shops and restaurants, but quiet as well. Really great if you are coming for the Biennale as it's an easy walk to Arsenale and not too far to Giardini. At same time it's not far at all from San Marco, Rialto, etc. And it's convenient to transportation, on both sides of the island, which is really handy actually (and makes for a straight shot to the airport on the shuttle which is great).
Only minor issues would be somewhat weak Wi-Fi and rather poor water pressure in the shower. But neither of those were big deals to us. We would absolutely stay here again.