Very good host. Replies very quickly, there is a option for pick up from the airport which is very useful in Palermo espacially if you travel with a kid.
Flat is a tourist attraction itself as a classical Sicilian apartament :). Probably better for summer as you may feel a bit cold during winter nights.
Very near to historical center, just a 5 minutes walk.
Area is not the best - quite dirty and loud but you don't spend the time there. There is lovely pastry shop just few steps away with very good cafe and food. Perfect for quick breakfast.
Also there is a guy selling sea fruits nearby but he tries to scam tourist by asking four times more than market price.
Overall flat is very good value for money.