@FLIL, I won't be reserving thru booking.com, I avoid them wherever possible. I did have to use them a lot for New Zealand, and I know what you mean, you book or can book in USD or EU, but in the end it was charged in NZ dollars. This is different, I believe, in that the booking and payment will be in USD, or that's my understanding. I would guess it is a hedge on the part of the hotel provider given the continued devaluation of the Turkish Lira.
The hotel is quite reasonable, so I suppose it is not a huge deal if I lose out on a conversion that is not completely in my favor. We are not fancy, and I love to stay in quirkier, small family owned properties, as long as they are clean, and well reviewed. Love the look and sound of Esans and we are only there 2 nights before the start of a Viking Cruise.
I would probably stay in a quieter neighborhood if circumstances were different, but we'll want to see as much as possible before this cruise. We travel with earplugs so noise doesn't bother us.