Diana's place is an extremely good value for your money! Not only do you get an entire room (with AC!) But Diana also makes you breakfast every morning. This saved us a ton of time searching for a place to eat. She also printed us off train times and recommended places to eat/visit. The room is a loft and a living room with it's own private bathroom and is very clean when you get there. Perfect host and amazing house!
Travel tip: if you travel by bus to the port, walk directly through the main streets past Castel Nuovo to get to the house. Don't follow the coast or else you'll be walking up many flights of stairs!