Five of us stayed for 4 nights in October.
The location is perfect for seeing the sites in Venice.
As other reviewers have noted, there are no doors on the bedrooms. And what may not be obvious, is that the bathroom is located off the bedroom with the double bed, so everyone must pass through that room day and night. This worked okay for us as we all travel well together.
The apartment itself was overall adequate and because of its central location, we could come back mid-day to have lunch their when we wanted.
My disappointment was with a certain level of grime in the kitchen. The over-the-sink dish drainer had black mold on it, that we cleaned. We bought clean sponges as the ones left on the counter were so old and dirty that we had no idea on which surfaces they had been used previous (the floor?). The serving tray was greasy and sticky as was the area over the stove top. I worked on cleaning both of those. In addition, the shelf that had the silverware was also sticky/greasy but I didn't attempt to clean that as I could just remove the cutlery tray. It made me feel that every dish we used should be washed first.
I don't think it matters that a rental be modern, but greasy kitchens are disappointing.