We went last night (Saturday) and were highly impressed with the design and atmosphere compared to the much noisier and more hectic uptown location. That said, the salad bar selection here was a bit smaller than that uptown and was mostly forgettable, with the exception of some very good shrimp (both cold and steamed) and some very high-quality sushi & sashemi.
As for the meat, I can honestly say that the sirloin last night was the best I've ever had ANYWHERE (and my two tablemates agreed), the pork loin wrapped in parmesan and turkey wrapped in bacon were quite good (even if I, to maintain at least SOME semblance of healthfulness, removed the bacon), while the flank steak, skirt steak, beef ribs and prime rib were completely forgettable. Falling somewhere in between were the "just okay" leg of lamb and lamb chops, and the somewhat dry pork tenderloin. None of us tried the sausage, so I can't vouch for that one either way.
For the first time ever, we tried a couple of their desserts, and were EXTREMELY impressed with a flourless chocolate espresso cake, and less so with a "just okay" strawberry shortcake.
The staff was extremely friendly and welcoming-- a major plus, in my book.
Conclusion: considering the $45 all-inclusive (except dessert and drinks) price, it's worth going just for the all-you-can-eat sashemi, shrimp and sirloin, as downtown Plataforma's versions of all three of these are top class, and elsewhere in Manhattan, a comparable quality LIMITED-portion dinner of just ONE of these three would cost you the same $45, once you got the accompanying vegetable and salad side orders.
(And, oh yeah, the fried bananas are pretty damn tasty, too, and try getting THOSE in any other steakhouse, sushi bar, or seafood restaurant!)