This was a very mixed experience. Overall, we (3 women) had a satisfactory stay but a difficult beginning when our host (with whom we reserved boat pickup) showed up in an open skiff in the pouring rain. Since the side of the canal where boarding might have been easier was occupied by a construction boat boarding required stepping into the boat from the opposite side of the canal (a 3-4 foot drop). The problem of the open boat in the pouring rain was attributed to the fact that it was not raining when he left and that we arrived late. Nevermind the local forecast predicted 90% chance of rain and it had been raining for the last two hours on the train. We were blamed for the problems boarding the skiff because we had failed to let him know our ages and infirmities. Nothing in the reservation process asked for this info. In fairness, a young, agile person may have managed with far less difficulty. Massimo used his larger covered boat for our leaving. However, the return trip met with a similar problem due to a garbage scow parked along the unloading area. The workers graciously moved the scow but because the tide was low it required a major effort to climb off of even the larger boat. If concerned i would recommend using the vaporetti even though it requires more time.
The apartment (4 bedrooms, 2 baths) is large and elegant; part palace with stained glass doors, beautiful wood trim, tile floors, Jacuzzi (which didn't work) and part hostel with mismatched worn and dingy sheets, chipped dishes, some not so great beds (some ok), an exterior bedroom window with a broken hinge.
We booked based on the hosts willingness to accomodate an early check-in (normally 3pm) but we're blamed yet again because of our early check-in when we requested more toilet paper.
The listing said the apartment had a washer. It did not. We were told near the end of our stay that there was a laundry in the building. No instructions to indicate that.
While I would not choose to stay in this apartment again I think the accommodation adequate especially for a large group aware of some difficulties.
Note other reviewers comments about Massimo being overcomitted.