I see a lot of people have already written a reasonable answer, but keep in mind following:
- about flat or car rental - depends who negotiates. If a European person or a westerner in general - forget it to find those rates. For them everything is double.
- as many have mentioned - depends on lifestyle. For example one of the most difficult issues for women here - to find a normal hairdresser, beautician, etc. usually too expensive and very low quality / level of hygiene. If you go to a normal place - prices are ridiculous for what you get.