To make it short: I will definitely come back and would recommend this airbnb to everyone who would like to stay in Palermo:)
First of all, you are in the middle of the town which is obviously perfect.
The location is amazing and with the good route description of Maria it is easy to find:) Besides that:
Everything is just like it is described in the texts and previous comments.
As soon as I arrived, I was welcomed (very friendly and warmly) by Maria:) Even if it was later in the evening, she showed me to my room and gave me a quick tour (kitchen, rooftop terrace, etc.). In general, if you have any questions regarding the airbnb, transport, recommendations, the city, Sicily in general, don't be afraid to ask, Maria is very kind and will answer any of your questions/help you with any of your problems. Also the contact before my arrival was friendly and uncomplicated:)
The room itself is very cute, colorful and CLEAN:) It contains everything you need. Besides that, the kitchen is fully equipped (in case you would like to cook something) and there is coffee, pastry, etc. in the morning (the ,typical`Italian breakfast) if you would like to. Of course you can make yourself something to eat/drink/... whenever you want to;)
One of my highlights was also the rooftop terrace. The view is just amazing and I can only recommend to go up there (especially during sunrise/sunset) and enjoy the view.
So if you plan to travel to Palermo, I can only recommend this great airbnb!:)