I was there last Summer and the hotel actually isn't exclusive to Solitair guests. There are rooms in the basement which are let out to some local workers, varying nationalities of paragliders and holidaying Turkish couples. So you will be sharing the facilities/pool area with them.
The hotel does have a great location, very near to the beach. If you like nightlife, you will have to go up to Hisoranou, as Olu Deniz itself is fairly quiet in the evenings. The hotel is very basic and expensive for what you get. The food is OK, edible, but nothing to write home about.
Adem and his girlfriend Helen, are great, so friendly and helpful.
Ladies...Beware of Hasan!!. He looks about 16 but don't let that fool you. He is very persistent, regardless of age or looks, as long as he thinks he'll get an end result. Which, he hopes will be in your room, when you come back tipsy! He will pursue you endlessly and try to woo you with roses and little presents etc...you know how it goes girls. Don't say that you haven't been warned!