Great location and good communication with the property managers. We did have a snafoo at the beginning as the water taxi was supposed to drop us at Rialto, but there was a miscommunication on the taxi dispatch end at the airport and we got dropped off before St Marks. So long walk with luggage through mega crowds was not fun - I recommend making sure you are going to Rialto and if not, having them take you there anyway. On the way back, we found a group that would pick us up in Manin Sq, a 2 minute walk from the apartment which was brilliant.
The apartment was plenty big enough for us all and we each had our own bathrooms. The outdoor terrace is delightful! Its a short walk to the Co-op for supplies where you can pick up bagged ice as well. Fabulous location.