Best experience ever with AirBnB. Cristina was super friendly and helpful and the communication was superb. She even let me know that the Marathon was taking place and the locations that were problematic.
Their apartment is exactly as stated and bed is very large and comfortable (not a common thing in Europe). Close to everything and perfect location for easy transport to/from the airport. Great canal view as well.
When back in Venice we most certainly will want to stay at Cristina and Ricardo's.