Where to start: positives. The people are nice. And its location in Palermo is great for the night life. Of course that night life goes on to 6am at weekends, so be warned.
Negatives: it needs a good clean from top to bottom as well as a lot of small maintenance jobs, like new sealant under the shower screen and around the sink tap, fixing the toilet cistern, fixing the shower unit to the wall properly, the sinking sofa in lobby, the badly scratched floors. It's shabby.
At first glance the place looks OK: somebody has an eye for the design but certainly not the finish. It was done on the cheap and it shows. It's all superficial; looks good in the photos, presumably taken just after refurbishment, but awful in real life.
The essential thing you look for in a hotel is some thought having gone into the guest's comfort and convenience. So thanks for the king size bed: why not put a king size bedsheet on it, instead of a single bed sheet that ruches up under you at night? There was no wardrobe or even a hanging rail (I had to buy coathangers to be able to hang my clothes on the door) and no full length mirror. The walls were bare.
A bread-based breakfast was all that was offered and exactly the same every morning. And the staff have a thing or two to learn about food service, not least making sure they bring a clean table mat.
'Boutique' hotel implies somewhere small but impeccably run. Small this is, but is probably the worst hotel for the price I have ever stayed in.