Alberto was very prompt in answering any questions since the time reservation is booked. He waited for us in the apartment when we arrived even though our flight was delayed. When we arrived he even helped with luggage and gave a walkthrough of the apartment and he also gave some fruits and prosecco complementary.
Regarding the unit itself, it is exactly as described in the posting. A perfect location as you are near Rialto and it was central to everything. You are 15 mins to San Marco and same to station or palazza Roma.
The best part is check-in and checkout times are flexible with Alberto. We had early check-in of 10 am and he gladly accepted it. All other postings were saying 2 pm. Because of early check-in we are able to spend extra day in Venice