Hi, I worked there on a contract, and it depends on where you will be working, I guess you might be considering Sidra Medical Center. This one is an upcoming new Hospital, state of the art. The salary is great, plenty of vacation time, lots of travel opportunities around the middle east, asia and Africa as the country is in central location.
It is expensive to live there, cost of living is high however depending on your purpose of going there, one can save a decent amount of money. ( that is one reason people go to any middle east country I think) There are no cultural restrictions - as you don't have to cover your face being a female as in the case of working in Saudi Arabia. You can drive, The city of Qatar is small, limited entertainment. Local arab population is smaller than other nationalities. Overall a great experience if you are looking for good work experience, good money and travel opportunities.