I would not advise a nanny to hire "outside the services of the hotel". Why? Yes, because you should not trust a child at this age to someone with whom there are no formal documents, such as a contract for the care of a child. This is not to the fact that you can not directly trust everyone, but rather, "you never know what."

I advise, before booking a hotel, if there is an individual babysitting service there, in some cases it can be booked in advance before departure or paid on the spot. But, note that when you are already in place, it may turn out that all the "nannies were dismantled" :) cost about 100-120 US dollars for 3-5 hours.

Second: hire a nanny in your city and take it with you , it will not be more expensive than paying on the spot in Turkey, moreover, on the road it can also help with the child.

But if you are still determined in Turkey to hire a nanny, then look in the search engine babysitter in Turkey. I can not recommend a specific website