Mimmo and Mimma were absolutely wonderful. Mimma greeted us upon arrival, and even though her English wasn't fluent, she did very well explaining everything about the apartment. They even had a mini fridge full of snacks just for us! The room was very clean. Mimmo was at work when we arrived, and seeing as it was lunch time, we walked to the cafe that he works at to greet him and have lunch. We had not yet gone to an ATM and the cafe only took cash. We offered to run to the ATM, but Mimmo insisted on us letting him pay for it and we pay him back. That sort of trust and hospitality is wonderful to see in this day and age!
The only thing worth noting about the apartment is that shoes must be left at the door and there's an external AC unit which you need to put ice packs into every night. These things were not problems for us at all, but it may be to others. So be aware. The shower was pretty small which may be a problem for larger guests. The location was perfect - right above the leather market and only a couple of blocks from the Duomo! I couldn't recommend staying with this lovely couple more!