In the original post the point was raised that at that cost of living you don't have to lift a finger. All your cleaning, laundry, and cooking are done by others.
It's trivially easy to find a really nice space to rent in the USA for $500 or so. The catch is you'll still be doing all your own cooking and cleaning. And you'll be surrounded by hicks.
I think that number is only if you're living very very comfortably. Personally, on a normal standard of living, I can get by with around $500 USD a month, and that's normal 3 meals a day with internet, phone, apartment (no pool or facilities.) Street food, normal portions are going around $1 to $1.5 USD so it's pretty cheap.
Now of course, you might be able to only afford to go to socialize at bars and restaurants once a month or else you'll blow that budget, but it's possible.
I believe you will need a business visa to legally work here (I am a Thai national so I do not have that issue) and getting one isn't a trivial task, unfortunately.
I suspect that the OP is most likely working using a tourist visa. IANAL but it is likely not legal if caught, but if you can get away with it, more power to you.
You can't live comfortably in Austria for $1000(~737 eur)/m. I've lived in Vienna for 8 years and that will just be about enough to live like a frugal student.
