The apartment is in a typical old Venice house. You can easily imagine, how people lived here a few hundred years ago. The place is easily reachable by vaporetto or on foot. It is close to all major attractions. Just make sure you have a map of Venice, so you will find your way around.
In case you don't get the details for the check-in, make sure to ask again. In my case the mail got lost somewhere. And without this information you won't be able to get in...