Lovely central appartment which is easy to get to from train station and airport shuttle bus if you get off in central Palermo and find your way to Palazzo San Domenico. Very central to old city and lots of authentic local bars and cafes.
Simona was a great hostess and very easy to contact. Check-in was a bit tricky as I don't speak much Italian and had to meet a neighbour, who didn't speak English, to collect the key. This was only as I was arriving late (and probably would've helped if I wasn't travelling with limited language skills). Other than that everyone nearby was very friendly.
Apartment was clean and spacious with all the appliances you need, though the heater was quite small for such a big room so I was quite cold a lot of the night. I visited in December though, so for most of the year this wouldn't be a problem.
Only major negative comment was the noise level. As it's a city centre apartment in a piazzetta there is generally a lot of noise from around 9am until the early hours of the morning including children playing, people talking/shouting, loud music from other apartments, and mopeds revving in the courtyard below. I didn't mind as I'm a deep sleeper, but this may be an issue if you're easily woken at night.
Definitely recommend and definitely good value for money.