First and foremost, Mara and her sister Fer are some of the nicest, most accommodating and helpful people you could meet.
They greeted us on our later than organised arrival with a beer and a pasta meal ready to cook, which was very kind of them.

Now, onto the apartment.
Previous reviews have stated the benefits of its cleanliness and its great location and services and all those points are very well made and definitely correct.
There are however a few points to note and need to be considered.
The walls (actually, the blocked off doorways that divide the ground floor into separate apartments) offer no sound isolation whatsoever and you can hear the conversations and tiniest noises from the adjoining apartment.
It may not seem like a big deal but waking up to Edith Piaf, which is what our co-guest played, at 7am four mornings in a row can be a little off-putting.
There are no clothes washing facilities, other than a couple of plastic basins.
We assumed that every apartment has a washing machine, at the very least, because we had never come across one that didn't have one. Never assume anything!
We did find a self service laundry (Laundromat, where we come from) in Via San Donà, about 1.5kms away just near the Hotel Kappa. The saving grace here is that it's across the way from a really great bar so you can go for drink whilst the washing is on or go just a little further down the road to the gelateria if that takes your fancy.

The apartment needs some decent size drinking glasses, i.e. larger than 125ml.

The apartment had a near finished roll of toilet paper and no replacement rolls. A small point which is an unnecessary inconvenience when you are traveling and don't know your way around.

The sofa bed is a great couch but unusable as a bed. My daughter ended up sleeping on the couch cushions rather than the fold out bed as the wooden slats hurt her back.

On the other hand the double bed in the main bedroom was great.

The Cadoro supermarket, which is 2 minutes walk, is everything that people have previously described and a lot more. It's terrific and the prices are low.

Transport to Venice's Piazzale Roma is regular and cheap. Don't bother with VeniceCard or promotional stuff as the normal imob.venezia rechargeable ticket, which you buy from a tobacco (Tabacchi) shop, is the cheapest and most convenient way to travel, even in and around Venice, as it allows you to use the vaporetti to places like Murano and Burano.

So, if you're a sound sleeper, travelling as a pair sharing the same bed, do not intend using the kitchen facilities all that much, are prepared to use local self service laundry and want a reasonable value place in a great location I suggest you consider Mara and Fer's place.