I've started flying EWR-DTW on a regular basis and just today realized that I could use the Lufthansa lounge. I had to show my BP and PC club card, then the agent motioned me to the right (not sure which side - Senator or Business - I was on). Very nice, clean well appointed club with things you'd never find in a PC, like bottled water, hot food/soup, and best of all, see below.....


Only downside is that they close at 6:30pm after the daily LH flight leaves, so no luck if you're on an evening flight.