Dani's and Monica's flat had everything I was looking for. Which was: a quiet space, with good internet where I could work until late hours without disturbing anyone.
Dani is so lovelly, she gave me a lot of tips about what I could do in Palermo. They were flexible and the check in was easy.
They gave me towels and umbrellas since those were some rainy days.
The only negative mention is that the stairs that lead to the room. Old people or people with moviment disabilities might want to consider other options.
That said, it didn't bothered me and I can't wait to come back :)