In Europe I've lived in Holland, Germany and Italy.
I've always had a job lined up though. Holland is great, everybody talks English and they don't expect you to learn Dutch because it's fiendish. I'd go back like a shot to Utrecht or Amsterdam (we lived on a houseboat, which was fantastic). The cafes, the cobbled streets, the rare glimpses of sunshine
I hated Germany with all my heart. I couldn't wait to get out of there. I don't know whether it was just Dusseldorf, as I've enjoyed trips to Munich very much. The people in my apartment block were horrible - they used to have a go at me all the time about bins, buggy, doors, keys without ever telling me what the rules were. They hated me for not speaking fluent German and were just downright xenophobic. Same in shops, cafes etc. Even when I was speaking German! I point blank refused to extend my contract under any circumstances and would never go back.
Italy was fun but it's also difficult if you don't speak the language. I'd go back though, the Italians are enthusiastic and great to be around.
You have to remember that you'll have to work out lots of things when you get there, like how to pay rates, bin days, utility bills etc and if you don't speak the language it can get very challenging - think of your local government website and how baffling it is and then put it into another language. In Holland for example, if you don't do bins correctly you get a fine - which you also have to work out how to pay. I got my car towed and had to work out how to do the pound in Dutch (and where it was, how to pay etc).
I would do your research first - look on expat websites for the local info and difficulties faced by expats before you decide on a country.