Though many told us to visit Kaunas if we went to the beautiful country of Lithuania, we decided to stick to Vilnius and spend the (almost) last days of our 2 1/2 week tour exploring the city and it's secrets.
Vilnius was hot, beautiful, full of great little bars and pubs and interesting history. Our hosts from Australia and Germany gave us a grand tour of everything and now I miss the sun there.
To me, Vilnius was a great mix of grungy pubs, artsy corners and amazing people. It had so much potential and gorgeous scenery, combining a relaxed atmosphere with interesting history (don't miss the genocide museum, a sad place to visit but well worth it) without being overly touristy. A backpackers heaven with low prices and lots to see.