Mario was perfect. We booked our location on the 27th of december and we travelled on the 29th ! He found us the perfect place to stay in Venice. That's really 100m away from San marco Square, just behind the Danieli Hotel.
The apartment is very nice, really convenient for walking all around the town. We were the very first guests of this apartment and almost everything was perfect. I definetely recommand all the travelers to ask Mario about availabilities about this apartment.