I visited this lounge the same week I was at a lounge at the Baltimore Renaiisance Inner Harbor, so it gave me a good opportunity for comparison.
The lounge is located on the 31st floor. It is pretty large and has great views of the harbors, apologies for the lack of photos of the view. I visited both for breakfast and evening hors d'ouevers/cocktails. The breakfast consisted of standard fare: breads, yogurts, fruit, scrambled eggs, bacon, smoked salmon and a few other offerings. For the coffee lovers, this lounge has three options: a Starbucks machine that also grinds beans, a fancy Keurig, and carafes for those needing a quick fix.
The evening offerings the one night I went included buffalo wings, mozzarella sticks, green salad, chesses, and crackers, if not a few other things. I was definitely impressed as the Renaissance's only hot option was a roasted potato dish. There were cakes and cookies for dessert as well.
The lounge was impeccably clean, well-stocked, and attendants were first class. I've been in four Marriott lounges so far, and this was definitely top tier, relative to the ones I've visited, but I expect average/above average for the company.