I can't imagine a more perfect location, or a more beautiful apartment, from which to explore Venice. It's five minutes to San Marco, 10 minutes to Rialto, but on a quiet side street and a lovely little canal.
Everything you need to prepare your own meals (except the food, but shops are close by) is in the apartment. If you choose to eat out, there are probably ten restaurants within a 3-minute walk.
The apartment is immaculate. It's air conditioned, there's a washing machine (but no dryer), and even a converter for charging your phone or laptop in case you left yours back in a non-continental Europe part of the world.
Elisabetta's apartment is up two flights of stairs with no lift: be forewarned. However, there are people who will put your bags on a trolley and transport them from the Rialto vaporetto stop to her apartment. We didn't use this service, but I would guess they'll carry your bags to your room.
And even though that room is one of the pricier options in Venice it's worth every penny. You'll hate to leave.