All 3 countries are stunning, with great people. I stayed at 3 Hostels on my travels
The Red Emperor in Tallinn
The Naughty Squirrel in Riga
Jimmy Jumps in Vilnius
All 3 places were great places to meet fellow travellers, and I made some great friends on the way. The weather was so cold -26c at one point, but the snow and frost made the places even more beautiful.
Ive written a blog with some details and lots of photos..