Assisi was absolutely great. One of the most picturesque towns I have ever visited. Would love to live there, except there's probably not much to do at night. Very small town, and we walked it from one end to the other. The tour was great, and we loved every minute.
We were cautious about this tour because it was done online, and we didn't speak to anyone. At the end of the day, Viator and the tour operator were excellent and worth every moment. Pompeii was very hot, so bring water. Naples was only a short stay and really not worth the time. Trash was on every street as we drove in, due to the strike. The bay was picturesque, but there was smog in the air. I would pass on Naples next time. The tour guide was extremely knowledgeable about Pompeii and may have been a professional archaeologist from the knowledge he had and was able to explain to us. He truly love his job. The bus was very clean, and lunch was fantastic.