I did a Socrates year 10 years ago (similar to Erasmus, but more working than studying), went to the Czech Republic, and LOVED it. It took me about a term to get into the swing of things, then I had a fabulous time!
my home uni had a fab scheme for the work placement - think there were 50 or 60 of us across the biological sciences who did a year of working - maybe 20 of us went abroad, the rest stayed in the UK and did industrial placements. I did an academic placement, and the work wasn't that great tbh, but the social life, and the life experience in general, were excellent! I met a lovely man whilst there, and he is currently playing with our DC2 whilst our DC1 clambers over me!!
My wee sister did an Erasmus placement to Finland, and adored it too - just a term, but she met a lovely Dutch man, and lives with him in the Netherlands now :o
anyway, apart from the meeting of our OHs, my wee sister and I TOTALLY recommend study abroad, we both got so much out of it, not just partners, lots of networking, opportunity to travel, expanding our worldview, and we made so many friends we would never have met otherwise!