+1 for Amsterdam (the Hague, Rotterdam and Utrecht). Rent is getting more expensive, but quality of life is very good, healthcare is 60€/month, top universities at 2000€/yr and overall good job prospects
Also, at least in the cities, everyone will be fluent in English.
If you pick city other than Amsterdam, or are willing to have a 45 min+ commute, rents should still be reasonable.