Riga
We were spending our NY holidays at Riga cause it's not far from Kiev Riga is a beautiful city, specially in NY time - many decorations, it was nice! I don't think that you need more than 2-3 day to do all sightseeing so notice that. Nothing to do in Yurmala in winter, may be you can visit Sigula (but I recommend to visit it only on weekends)
Insider Tip:Lido's food is good =)































