I got bus last year 16lev and took about 4hrs including a coffee break on the way, easy journey. Getting taxi this year though as flight arrives in the evening so the cost of a hotel balances out the cost of taxi.
hire the car its much more fun and even if you hire it through Hertz,its classed as out of season. My friend and i hired a very small car last year for a week, £80.00 all in. Yu could have rented my appartmet you know. No other bugger has. Cedar heights, pool, jaq, sauna, restuarant, bar....oh well