Location in the city is AWESOME. Easy walk to every sight. (The furthest site, Capuchin Crypt, was only about 25 minute walk.) That said, the immediate surroundings can be worrisome when you first arrive due to trash and graffiti. But this is Palermo.
Inside, the unit is clean and modern. Nice firm bed. Warm water in the shower. Good heating. Fast internet.
There is a great outdoor market nearby. It goes for blocks and blocks. Many restaurants from high to lower end. The train station is an easy 10 minute walk.
You will need to walk over paved roads so this is NOT the place for you if you have lots of big heavy luggage. Other than that we highly recommend this place and would return here.