Do yourself a favor and book this if it's available. This apartment is FANTASTIC.
The location is great - on Murano, where you can see the glass factories and shops but, when the day trippers leave, is a relaxed more authentic place to be than the hustle and bustle of Venice proper. A short ride from the airport or San Marco and near restaurants, cafés, and shops. We never once regretted staying on Murano.
The apartment is wonderful. Modern, immaculately clean, spacious. Our family of 4 (parents + 15 and 18 y.o.) was very comfortable even in the heat of August thanks to the breezy apartment and air conditioning in the bedrooms. High speed Wifi was great. The unit is a whole floor of a building which didn't seem to have other occupants so it was very quiet other than the boat traffic on the canal, which is the spectacular view from the balconies.
The hosts were great! They provided lots of helpful information about transportation, along with recommendations for glass shops and restaurants. Check in was a breeze, and we were able to check in very early which was a big help. Easy and fast communication.
I can't say enough about this place. Rent it - you'll thank me.