We a had a great stay at the apartment (3 generations with some young children).
Anna is very helpful and was very flexible with some last minute changes and requests. The flat is in good shape, nicely furnished and has a great view. It is spacious and I concur with another view that it is actually nicer than the photos suggest, with spacious rooms (apart from one bedroom which is on the small side), nice bathroom and a tasteful dining room / lounge. There are 3 balconies, giving ample space to people to spread out. The kitchen is basic but adequate.
The flat is located right across the beach where there are very well maintained areas (paid) and there is a bus stop across the road which will take you to the more central areas of lido and the Vaporetto to the other areas of Venice. There is a street with shopping available very nearby.
I highly recommend the flat for anyone wanting to combine a calm, non-crowded beach and Venice holiday, travelling in a family or group.
I should add that we were a little nervous about our fearless two-year-old on the balcony - the fence is safe overall but we did not let him go out there by himself. It's definitely safe if your nerves can take it...