I don't think Banff is a bad option, there are a lot of nice restaurants and stunning scenery. Chateau Lake Louise is a beautiful hotel as well, and the Banff Spring is too, small rooms don't bother me. The hot springs in Banff are still enjoyable even if it is overdeveloped. I would not go to Kicking Horse... its a good hill for advanced riding but a shit town to spend your honeymoon in.
+1 for Banff