Tavernas definitly to try is Tne Nest and Brians both as good as Apostolis which is one of our favourites in Kef.
You can get a water taxi to Golden Beach but our other was a full day boat trip with Eros 11 book in Thassos town by old port.
The bus service in the day is very good but when you here them talking about Thassos bus station it is a shop where you get tickets and busess park opposite,
Reccomend phone Socrates and ask George for a sea view if you havent done it with your booking .