I booked this room because, after a week in Mannheim, I had an early flight from Frankfurt back to the US and didn't want to risk being late because of a train issue. So I spent the night at the airport in the Marriot. Beautiful room. Short walk from the Frankfurt Flughafen Bahnhof and a short walk to the terminals.
Breakfast was somewhat a disappointment. The layout of the buffet seemed disorganized and they kept running out of juices because they only had a single pitcher of each juice ot at a time. Also as it was shared with the Sheraton (actually in the Sheraton), it was very crowded and when I got up to get some juice when it was finally replenished someone sat down at my table. Luckily one of the staff told them the table was occupied.