Christina's apartment is superb. We were there during the winter holiday break.
What we liked:
* sparkling clean
* great communication with host, very responsive, good directions, check-in/check-out procedures
* nicely spacious apartment for our family of four (living area, master bedroom, kids' room)
* great location right in the heart of old Venice, within walking distance from all the major attractions
* tastefully decorated and has all the amenities (kitchen, dining area, washer/dryer)
A few things you may find uncomfortable, especially if you have luggage:
* at least 15-20 minute walk (over bridges and stairs - typical in Venice) to get to the apartment from train/bus station, or pay to take public canal boat and then walk 5-10 min through alleyways
* apartment is on the third floor via stairs only (no elevators)
* garbage disposal is not included in the "cleaning fee": you have to sort, pack, take the trash with you and walk some distance away to public disposal facilities when you leave.