http://www.aalto.fi/en/research/strengths/#key_areas
There's your answer. It's in Helsinki, Finland. One of the leading universities in Northern Europe on sustainable development.
Ok, I didn't go there, but I'll answer your questions:
1) The success rate is difficult to define, as Finnish pupils get in for free and can drop out at will. Unlike in many other countries it's very difficult to get in, and also very difficult to get kicked out. The professors are not maybe known worldwide, but they are the top tier. After all, we can boast with the best education system in the Western world. IDK if you know the mobile game Angry Birds, but it was born there.
2) Straightforward is pretty much in our genes. Our society is very egalitarian, for example you call your professor by his/her first name. The professors and tutors are there for you. After all, you're already priveledged that you qualified to get in, so they won't lose you.
Foreign students have a quota different from the domestic quota, so you won't be competing with Finns, but other foreigners. It's only up to you. The entrance examination will be the toughest thing you do before your bachelor's. And you are automatically enrolled for the master's degree when you get in.
3) Depends on yourself. Create contacts, do some networking, get good grades and try to learn at least some elementary Finnish. If you speak only English and have little work experience it's hard to get a part-time job. When you graduate it's a different story.
But anyway, even if you have as a non-EU student have to pay the tuitition fees, you are under Finnish social laws. That means that you're eligible for subsidised student housing, subsidised hot meals at the student canteens, subsidised public transport and
free student healthcare, so your running costs will be quite low. Depending on how much you party.
The Aalto University and other universities in Helsinki have a ton of foreign students and expats, so you have no problem blending in.