Leos appartment offers some really good value for money. It has the perfect location in the center and everything you need. It is big enough for 2 or 3 people ( I was alone and found it very spacious).
It is not actually dirty, but I also didn't find it 100 clean. When I walked on the floor after a few minutes my feet were dirty. Also there are some ants in the kitchen if you leave food, I didn't know about it and hat plenty of ants the next morning when I left an apple there.
Leo was a really helpful host though what made my stay much more comfortable. Although I didn't meet him in person he replied back to messages really fast and had good tips regarding Catania. For the price the apartment is a very good deal.