We were met by Fabio's daughter Alessa at the nearby Campo de San Polo, and she showed us around the apartment. We weren't aware of the 1,50 euro tourist fee (per person, per night), but paid this to Alessa upon arrival.
Fabio's place is really lovely! They had left us a bottle of wine and a big bottle of water, which was very sweet. The kitchen is well stocked, and has the basics like sugar, salt, pepper, coffee, etc.
The pictures match the apartment perfectly, down to the exact same bed linen used in the photos. We had a wonderful stay, and found the place to be very central once we figured out the vaporetti (nearest stop is Mercato di Rialto - a 5 min walk away).