Alberto's place is very conveniently located close to the Rialto Bridge and the San Silvestri waterbus station.
He was kind enough to meet us at the waterbus station, let us into the apartment, and explained everything we would need to know about the apartment and immediate area. He also gave us excellent advice regarding what museums and churches to see. Each time I asked him a question regarding local food, transport, or the slightly overwhelming local trash pickup situation, he responded on Whatsapp within minutes and patiently-explained the answer.
The apartment was very clean and comfortably. I would definitely stay at Alberto's place again.