We had a wonderful stay in this lovely apartment, and highly recommend this place. Angelo was an excellent host who was very hospitable and friendly, and flexible with check-in/check-out times. He replied promptly to all emails, and was helpful with local travel tips.
The location is fantastic, adjacent to the Piazza Castelnuovo in front of the Teatro Politeama -- it's about 25 steps from the building to the Piazza. While the street itself has little traffic, this is the city center with typical sounds. The building is well-maintained, and the apartment is bright and very clean. The photos in the listing are accurate. Do note that the sole full bathroom with shower is off the common area, with the second bathroom being an en-suite powder room (in the bedroom with two twin beds).
We are a family of five (with three teens) and found the rooms to be spacious and comfortable. Each room has its own heat/AC unit, and the wifi was speedy. The kitchen has a full range-top, microwave and small fridge, and was well-stocked with pots, dishes, flatware etc. and even some basic cooking supplies.
We loved Palermo, and having such an excellent and central apartment from which to explore the area really made our trip even more wonderful. We would love to stay here again, and recommend this apartment to everyone.