The room is modern and clean, but there is a lack of some common things (like something to hang the clothes on, maybe on the back on the front door, and also some hangings at the bathroom door).
We've been in March so in the night we stayed with the air conditioner turned on heat, because in the first night we felt a little bit of cold.
Because the floor is tiled, you have to have some shoes to stay with, inside, or some solid socks, because the tiled floor is quite cold.
Overall, I recommend this for everyone, it's modern, there is a (mini) kitchen inside so you can cook inside, having the fantastic fresh food from Palermo markets (great fish, excellent vegetables, etc).
With more attention for some important details, this could be a 5 star location, but for the moment is just 4 star.