Owner of Blackforestandbeyond LTD. Expert Guide in the Alsace and Blackforest.
Freiburg im Breisgau
Colmar: Colmar in January
I might be late with my answer, but I prefer the smaller town of Colmar. Apart from the are between Pont Couverts and the Minster I find Strasbourg very uninspiring. Also, overcrowded.
Alsace: Where to go in French AND German Alsace regions
Just take a trip on the Alsatian wine route: Kaysersberg, Riquewihr, and so many more villages to go to. 106 in fact! Wine producing capital is Colmar. Make sure you try the Crement d'Alsace!