The room was very nice and clean, we could also use the kitchen and the fridge. The place is about 30min from the centre (you go to the centre by bus 04B, then by train Roma-Lido and then by metro). It is only 3 stations by the train Roma-Lido to the beach (station Lido Centro), there's a free public beach called Curvone.
Pino and Claudia were very kind and helpful, they even made dinner for us, we had pizza. They also made excellent tiramisu. The hosts don't speak english very well but there's one indian guy Safi that works for them, he speaks english well, he was very kind and helpful. Also talkative, we felt comfortable staying there.
I really recommend this place :)