I can only recommend ask girls send amateurs pics from Whatsapp viber iMessage send amateurs pics girls, I don't recommend book girl in Turkey without home photos I many times don't visit Turkey, I can't recommend any agency, one agency which I was used, (aphrodita.tv) now change name, domain and country(( (now in Netherlands (roksolana) Also can say agreed on incall only in really big hotels, because in small hotels available problems with reception.
P.S
I'm new on this is forum but have many experience with escort girls in différents country. In Turkey many fake pics and fake reviews, about pics I was say. About reviews, I was check this forum and can say all reviews which I read here, and also was have meeting with same girls. I can confirmed, here reviews true. Good forum, but please share more info, and writes true reviews. I soon will have visit in Tirkey) I hope some one share here interested information. Good luck!
If girls not have many reviews on local or international forums and guides, from trusted users, need be careful. I think better look girls who have amateurs pictures on site, if girl don't have amateurs pics online you can ask she send on WhatsApp, now times 90% agencies and independents use WhatsApp messenger. 
If you would like surprises))) you can book girl without reviews and amateurs pictures.))) But no one can guarantee that this will be a pleasant surprise for you.)) 