This Greece and Turkey tour operator was amazing! Smaller travel agency that puts time and effort into crafting a perfect itinerary.
They booked us the most amazing hotels in Greece! We also took a private catamaran tour in Santorini - absolutely stunning. Above all else though, so reassuring knowing that everything was taken care of - all of our transportation, hotels,etc so we could truly relax.
Nothing really! If I had to though, I may have spent more time in Mykonos over Santorini - both are equally beautiful though our group loves to party and full of single ladies...so clubbing was more fun in Mykonos! :)