Erice definitely worth the effort to visit.
We very much enjoyed our stay at Vincenzo's place, starting with the time and effort his parents took to help us ferry ourselves and our luggage (it took two trips in their car) from parking (about an 8 min walk) to the townhouse. Charming lodging, with charming hosts.
Great location in old town, with tremendous views from terrace, and from windows.
The rooms are stacked on top of each other: two twin beds and full bath on ground floor, then small living area and large kitchen on second floor, then master bedroom, 1/2 bath and terrace on third floor. The second floor can be reached by outside staircase, but the third floor requires using a narrow-radius spiral staircase (which also connects all the floors, inside the house).
The kitchen came with lots of goodies: a bowl of fruit, coffees, teas, milk, small bottle of prosecco, bread, butter. Much appreciated.
Negatives: the living area has a couch, which seats two--this is the only seating in the room. The only room with screens on the window is the bottom twin room, and during mosquito season, this is an issue if you'd like to leave windows open.