Good decision. I did that 4 years ago & let's just say, it can't be that bad if I left a design management job at Aston Martin cars & a period Cotswold house, complete with wood beams, fireplace & stone floors. It's probably the safest city, in the safest European country. In 4 years, I have not heard anyone mention the words 'knife', 'stabbing', 'teenage death' 'mugging', 'rape', 'street fight' at all apart from when I return to the uk monthly. It has it's downsides & chief amount them is earning enough to live well, but at aside, if you find a nice place to live & build up nice friends by making an effort, (for example, join my Brasov league of gentlemen, www,whitemountain.ro/blog) or form your own social network, you will love it, once established..
If I moved my business to bucharest, I could quadruple my success but I prefer quality of life & people over profit, hence Brasov reigns supreme.
Ps, I would challenge the comment below about rents being higher. They are lower as you will see on my site, www.whitemountain.ro. My team can find you a simple studio for 200e, a nice 1 bed for 250 & a premium luxury for 400e such as this
But of course, some agents won't be as client friendly as others so you could end up being charged more. Just do your homework with Internet comparisons & you'll be fine.
I live here. See www.whitmountain.ro/blog