It wasn't easy to find the place, mostly due to Naples chaotic traffic (we arrived by car in the early evening so I guess that didn't help). However the palace is really something! There were actually tourist grups visiting it while we were there. Beautiful place, and the room wad very nice too, much bigger than it looks in the pictures.
We only stayed the night, leaving the following morning to catch our flight, so didn't get a chance to do much in the city or talk to Celesta, but she was easy to reach before the trip.