just wanted to add dont forget to take money for Tips..( the waiters, bar staff and housecleaning staff )
these people world long hard hours to provide you service and their monthly wages are not that high
It is customary to leave a tip in restaurants (10%), for hotel chambermaids, in reception for hotel staff . Taxi drivers do not normally expect a tip, but they do appreciate it, and it's acceptable to "round up" the fare. So if you're charged 4.5 TL it's usual to give the driver 5 TL. Hairdressers also get tips, similar to the UK.
Housekeeper - Tip: 2 liras a day or if you want to be a bit more generous 2 euros per day in a moderate hotel, more in a deluxe hotel. but its up to you. (Tipping daily rather than when you check out ensures that the tip will go to the specific person who cleaned your room.)
I think liras would be best but I dont think anyone would not want or accept foriegn currency..Just go with what you feel is appropriate, there is no exact science and you're not expected to tip either...but it is a nice gesture especially when you receive good service.
here is an example of what I would tip when I have ate out in a restaurant..last week I had dinner with friends and the bill came to 109.00 turkish liras..I gave a 15 lira tip..as I felt 10 liras might be a littke cheap on my part.
most restaurants I would tip but if I received bad service I would not.I even tip the pizza guy 1.5 or 2 liras when he brings my delivery to the house.