Yes, while single occupancy rate occur throughout Europe at almost ALL Hotels, it also occurs at quite a few Marriott properties in Europe too. There are single room rates at many Hotels, and at some like the AMS Ren they have single rooms; whereas others they have regular double occupancy rooms at single occupancy rates. Garmisch-Partenkirchen Ren $115 for single occupancy whereas same room for 2 is $160. Now, there are other Marriotts, like the Heidelberg Marriott, where the rate is the same whether it is single, double or triple occupancy.

tpasol, you and your fiancee will not run into this problem as you will not be booking a single occupancy room.