This is a great spot for exploring Palermo. Though we didn't venture very far from the Airbnb, we still felt like we experienced a lot of what the city has to offer. Within walking distance there are street food stands, a town square, bakeries and some amazing restaurants. The entire street next to the location at night becomes a pedestrian only area which makes it even friendlier for exploring.
As for our experience with Ivan- I had a little trouble finding the place at first, but that's mostly due to the fact that the entrance is in an alley way and I wasn't familiar with the area. Ivan called me as I was looking for the flat and was able to figure it where I was from what I described around me and came and met me, helped with bags and was very friendly throughout. He also provided breakfast for the next day in a little basket waiting for us when we arrived.
If you plan on driving through Sicily as we did, there is also parking a couple blocks down that is free! We would definitely recommend this place.