My girlfriend and I stayed in Roberto's place for a long weekend (Friday-monday). Was greeted outside the apartment by Carla (directions were clear, and accurate despite Venice being tricky to navigate around). Carla showed us in, and around the apartment, including maps, tourist spots and other useful info.
Apartment was as expected, clean, had good WiFi, fans, bathroom clean etc etc. was in a great location and walkable distance to everything you need, st Marks Square, San polo (great/ reasonably priced food).
Absolutely zero complaints from either of us, would definitely recommend / use again 👌