I went to the CT on Rick's Villages tour a couple of years ago, in September. It was still pretty crowded (2 cruise ships in at La Speza). We actually stayed in Levanto, a pleasant seaside town just outside the CT. at the Albergo Primavera. A very pleasant hotel. The town is very quiet in September and some restaurants were already closing up for the winter.
You can take the train from Levanto to all the CT towns (and Genoa). I took the train to Riomaggiore and walked from there to Manarola and Corniglia. The first part of the trail is very easy but it gets progressively harder. If you have any fear of heights, forget it - the trial really does cling to the cliffs and afer Manarola it does not have any guard rails. 3 of our tour group did the whole thing in one day and, even though they were all hardened hikers, said it was a pretty tough walk.
After 2 weeks of touring, I really enjoyed taking a "vacation from my Vacation" as Rick calls it and hung out at the beach (sandy and warm)with a book in the afternoon.
The owner of the hotel is a good cook and we had a wonderful meal there - lots of fresh seafood. You need to let him know in advance if you want dinner. There is a good pizza place about 10 mins walk away He also has tables set up on the pedestrian street outside which is nice for coffee, eating your pizza or having a drink.
I think that Pisa is the nearest airport; and then train or bus - Rick's book will fill you in.
Enjoy!