Me and my boyfriend booked with euroventure last year, we did the 6 week package and absolutely loved it! I would definitely recommend booking with euroventure as they sorted out all our trains and accommodations for us and they even made us a little book which had directions from the train stations to the hostels. I was a bit anxious about staying in hostels as I had heard many horror story's but every single hostle we stayed in was clean and actually really nice! My personal favourite was in Berlin 'The Circle Hostel'. Overall had an amazing time and it was the best decision I have ever made....... I would definitely reccomeny do it!!