I have been fortunate and spent at least 6 months in the following cities for work..
Seoul, South Korea - cheap and lots of willing woman
Barcelona, Spain - expensive European prices. Better prices out of town
Atlanta, United States - hard work but lots of skanks
Sydney, Australia - very expensive
Athens, Greece - fun easily available cheap fun
Beijing, China - cheap woman just be careful
Rio de Janeiro, Brazil - cheapest sexy woman go for other SA woman in the country for real bargains
Tokyo, Japan - my favourite but very very expensive
Calgary, Canada - like the Uk
Albertville, France - expensive
Lillehammer, Norway - hard work but really rewarding if you find the right girl
Nagano, Japan - cheaper than Tokyo
Salt Lake City, United States - Too hard work in the US
Turin, Italy - lots of fun to be had not too bad value for Europe
Vancouver, Canada- hard work
Sochi, Russia - lots of cheap EE girls
Pyeongchang, South Korea - do love Koreans easy fun
Milan – Cortina d’Ampezzo, Italy - I do find Italy easy, maybe because I speak the language..
The most important factors are cost of living and average wage that will give you the best idea of where is the best place to stay.,