I'd recommend staying at Marco if you're going for a short trip to Catania and plan to spend most of the time out in the city. Marco is a very communicative host, we had no problems with checking-in and -out. He gave us plenty of useful tips on where to eat and drink. The apartment has all the listed amenities and is centrally located, close to a very nice park. The only downside is that it's very dark inside during the daytime.