I also tend to tip the house cleaning(Maid sounds so dickension) at the end of the stay and the amount is dependendant on how good a job they've done. Never been to Icmeler, but apart from one place in
Greece the cleaning is top notch. Barman in the
hotel I'm staying at I tend to round it up, after all you will probably see more of them than any other barman, and I've always found those little tips after each drink tend to find their way back to you in the form of more generous measures!!
As for restaurants, if I have a good meal in the uk, with good service I will normally leave a fiver or if the bill is say £43.00 then £7.00 pounds. The thing I've always found with tourist destinations is the staff never forget a face, or a generous tipper, and will bend over backwards for you the next time you go in!!
Chris