Hi there markusmerkus,
sweden is a great place to study especially if your main choice is Lulea; the most northern university in the world.
one thing i will let you in on though, is the fact that most studies in swedish universities is purely independent. i mean this with a whole new meaning of independent study .... and i mean directly from a text book and mostly in your own time. the cultural approach to the education system in sweden is very different to that of the uk.
my intention is not to knock you down or patronise you in anyway, but just merely to share some of my personal experience of studying in sweden. However, it will be a great opportunity and you should jump to the chance if available.
oh it may not be free for non-swedish residence now, but i can't be sure on that. it would be way cheaper than paying the going rate of £9000 in the UK though. the cost of student housing was much cheaper than that of the uk too (believe it or not), i was paying £260 per month for an ensuite room (massive) and a shared kitchen of 6 and a balcony with an awesome view. plus, students are not obliged to pay energy bills either.
if you express an interest and sincerely want to study in a swedish uni then you will make it without the shadow of a doubt. but be prepared to learn Svenska, its not too hard and you will be respected a lot more.
anything else you need to know just ask, i'l be happy to help you.
good luck and kind regards.