We just returned from Athens to Barcelona cruise. We stayed 2 days in Athens prior to boarding. We booked an evening sunset tour on Thursday and a full day on Friday visiting all the sites in Athens and then Corinth. We used Michael's Amazing tours. Our driver Panos was great giving us ample time at each location. Check their website. They have various tours to a lot of different places. Each day they picked us (6) up at our VRBO and dropped us off. They made sure we were aware of the places that could have potential for pick pockets and would let us know to take extra precautions. We did not have any problems. I would use this group again!