Vanda is a great host and recommended many places for us to see, she also arranged for a car to pick us up from the Airport.
The location is great as you can literally walk to all the main sites of interest directly from the flat the only time we needed to take public transport was to the Central Station (but that was only a 5 minute ride). The train station can connect you directly to Cefalù, which is one of the most beautiful coast towns that I've ever seen.
Note there are only stairs to this fifth floor apartment, plus you need to be careful climbing the metal spiral staircase to the master bedroom, but these small details were not important for us.
Considering the proximity to the tourist sites, Vanda's very attentive hospitality and the awesome view of central Palermo, I think this is excellent value for money and rare find at that!