Really great flat in an amazing location (2 minute walk to San Marco square) at a fantastic value. Modern fittings, good heating system and two good-sized bedrooms and baths. Conveniently, the host can also be flexible with regards to luggage storage in the building after checkout.
If you are a light sleeper it is worth noting that the convenient location also means it can be "lively" outside during the night, so earplugs may be needed (depending on what you are used to from home).