I bought a tour in the firm "Sakums" it was called "Olympic Riviera". The manager took care of everything quickly. I had the main point - to go by bus without any transfers directly to Greece and back. My 8 year old son was traveling with me for the first time. Three times I asked about whether we were really traveling on the same bus, the manager answered in a flowery way.
Good hotel. Unpretentious, but very clean, cozy with super attentive and hospitable hosts. They clean the rooms, clean the pool, they are ready to listen and help.