I'm sure Francesco's main B&B is good value, but please check with him in advance whether he plans to have to stay at the main accommodation or the satellite accommodation a few blocks away. This is where we were obliged to stay, travelling back for breakfast the next morning.
The satellite accommodation represented very poor value. There were electrical problems that meant we had no lights or aircon during the (hot summer) night. With that and traffic noise our sleep was pretty much non-existent. When we asked for a refund we were offered only a small % of the total booking cost.
There was also none of the advertised wifi.
Think very carefully before you book with Aria Dell'Etna...