Location - Superb if you want to be in the thick of things right by Rialto Bridge. Extremely touristy but if location is important and its your first time, then this is a great location.
Accommodation - Space was fine for 2 adults and a young child. However, the spring mattresses were very dated and quite uncomfortable. Had issues with the bathroom sink which was clogged but that was sorted. Floors were dirty and sandy and that was sorted the next day as well. However, for some reason one corner remained particularly sandy. Awesome roof top terrace with great views. Those with young children should be careful (stating the obvious). Bathroom is very tight. Its a 4 floor walk up to the flat as it has a roof top terrace so if you have large suitcases, please be aware. Venice isn't a place for suitcases anyway and if possible, travel with a backpack.
Communication and check in was excellent.