Me and my partner stayed at Nicola's place for four nights. San Polo is a great neighborhood that is not too crowded even in the summer, but in the winter it was super quiet and calm. The apartment is in Campo San Stin, next to a very sweet cafe/bar Vizio and a lovely wine bar La Botiglia. The place is very spacious and we found it really comfortable and clean. Nicola is a great host --he sat down with us with a map and gave lots of really useful recommendations from restaurants to current exhibits. I highly recommend his place! We will definitely see if it is available when we return to Venice.