i had a good stay in a suite @ brandenburger hof berlin. fantastic breakfast.
there is no luxury near freiburg DE or grundlsee AT is there? also thoroughly enjoyed those destinations.
dom hotel in CGN isnt luxury, but dom side "corner suites" and "dom suite" have amazing views of dom. hotel is bottom left -
http://maps.google.com/maps?f=q&sour...02081&t=h&z=19
switzerland also has plenty of luxury hotels/chalets.