Sara, was great! Here help with directions and her recommendations made my trip so much better. She is also very quick to respond to questions and requests. The bnb is in an excellent location for me, on the edge of all the city action, close but not too close so it was relatively quiet for being in a loud city. The host does offer earplugs for noise sensitive folks.
The area seemed pretty safe and I had no problem returning from dinner at a restaurant about 800 m from the bnb at about midnight. I was here on a Saturday and the area around Piazza del Duomo was a true street party for blocks around.
The room was spartan with the necessities and a rather uncomfortable bed. I stayed 1 night so not a real problem. The building has a strong locked door but at night, if you cannot find the light switch, it is really dark, flashlight on phone dark. It is also pretty safe.
In conclusion, the service is 5 star and the facility is a good economy choice for a day or two in Catania.