Nightlife is good in Berlin and in London as well. You'll have a blast in the southern Mediterranean - Barcelona is a big one, Ibiza, and I know people who have had great fun in the south of France and in Portugal as well. January is not the best time to go to Europe, weather-wise, though, so dress warmly.
I have been to Paris twice and I think it's beautiful with great food and great sites, but it's also a bit big, overrun with tourists and slightly impersonal. You have to see it, but it's also the sort of place where you want to go to museums and galleries. I personally loved London every time I went there, it's a very cool blend of continental Europe and North America in some ways and I'd very much recommend it.
There aren't many places that you can go wrong. Honestly the only country in Europe that I expected to like a lot better than I did was the Netherlands, but that was because I went at the end of January and I swear they have the worst imaginable weather and I say that as a Canadian.
I have been to Paris twice and I think it's beautiful with great food and great sites, but it's also a bit big, overrun with tourists and slightly impersonal. You have to see it, but it's also the sort of place where you want to go to museums and galleries. I personally loved London every time I went there, it's a very cool blend of continental Europe and North America in some ways and I'd very much recommend it.
There aren't many places that you can go wrong. Honestly the only country in Europe that I expected to like a lot better than I did was the Netherlands, but that was because I went at the end of January and I swear they have the worst imaginable weather and I say that as a Canadian.