I stayed in Peppe's B&B for 4 nights. It is a very good central location for discovering Catania, Etna, and the north-eastern coastline, as I did. Taormina and Castel Mola are great for a day visit, providing you're not afraid of heights as you wind up the road on the side of the hill to Castel Mola. Etna is amazing, seemingly dominating the skyline from the moment you leave Catania Fontanarossa airport- there are many tours available from Catania itself or from Refugio Sapienza on Etna itself- well worth doing if the weather is clear. Aci Castello is ok, but you probably wouldn't come for Aci Castello itself- there are some good paneficios, a couple of small supermarkets (eg Craie), and some places to eat out, which I am sure Peppe will recommend for you. It is also walkable, if you are careful on the hill down, it's approximately half a mile from the B and B.
Peppe was a very warm and welcoming host, and showed kindness. He was busy, but always willing to talk to you and give some good advice on places to go and see, and keen for you to discover Sicilian life. I stayed in the apartment, which was a simple base with basic kitchenette, and bathroom, but everything was clean and tidy. The rooms are in a line and you all have a private space of patio, which is pleasant, obtaining the sun from early morning until just after lunch, which helps to get you up and out in the morning! The view from the upstairs rooms is better, but it depends what you want from your stay.