The space is really really big and clean, which is wonderful. There is also a private bathroom, which is apparently pretty rare for Venice. The bathroom was HUGE - there's a shower, separate bath tub, toilet, bidet, and lots of shelving space for your toiletries.
We were able to come and go as we pleased. The place was quiet, and we couldn't hear any of the other guests nor any of the revelers outside. They also came in during the day and spruced up the space and made the bed. Monica was really great to send someone to pick us up from the water taxi stop once we arrived - we would have definitely gotten lost. FYI, late fee if you arrive after 8:00pm is €30, and there is a €3 / person / night city tax that is due in cash up front upon arrival.
The one point of contention that my husband and I had was that her listings stated that breakfast is from 8:00am - 10:30am; when we arrived, however, the lady cooking the breakfast (not Monica) said it was from 9:00am - 10:30am. It wasn't until we brought it up to Monica that a compromise was reached to 8:30am. The breakfast was really good, though. There's espresso / cappuccino, toast, jam, Nutella, hard boiled eggs, cereal, milk, orange juice, fresh fruit, and an assortment of pastries.
I highly recommend staying with Monica! We'll definitely look into staying with her again when (not if!) we return to Venice. Thank you!