DD and some of her friends did an Erasmus year in Amsterdam as part of her degree, she also met 2 other girls from British families who were planning on doing their whole degree over there (one a BA, one Masters). While overall she did enjoy her time in Amsterdam (fantastic city), she did find the system very different to that in the UK.
There is not as much of a student social life as there is over there. I think maybe because it's more the custom over there for Dutch students to live at home and attend their local uni? She was housed in a block with other exchange students mainly and met people from all over the world, but not any Dutch - well she did make one Dutch friend.
They don't seem to have the long holidays we have over here during a university year, the course started at the beginning of September and finished at the end of June (if I remember right), there were 2 weeks off for Christmas and no time off at all for Easter. There were 2 semesters, the second one began at the end of January right after the first one, from what i recall there was no break. The course was taught in modules which happened one after the other, always with an exam at the end, then on to the next lot of modules. As there were no breaks (except at Christmas), no reading weeks etc., the pace was pretty relentless.
Because of this she didn't really have time to explore the country much or travel out of Amsterdam, which she assumed she would have (thought that was part of the purpose of Erasmus)? A bit disappointing. She did score good marks for the year though, but I'm not sure how much it counted towards her degree.
A lot of the modules were very interesting, and there was a wide choice. They were taught well in English. However it is far more common to fail a module over there, a thing which doesn't seem to happen over here if you work diligently. The Dutch students didn't seem phased by this. There is little guidance from academic staff or student support. Both of her British friends trying to do whole degrees over there eventually gave up because of this, and reapplied next year in the UK. The Dutch university didn't seem bothered about students dropping out. It is just a different mindset I think.
She is still glad she did it though, even though it was not exactly what she was expecting.
Her friend trying the undergraduate degree was from a British family living in Europe - like you? and had attended international schools. At least her abandoned Dutch degree didn't cost her much (I think as she dropped out before the second semester she got her fees back). But now she is studying in England she has been able to get a student loan for her fees only, not living expenses. It is proving quite expensive for her family.