For some reason, this UES branch of the Gap always looks slightly better than a flea market. I know the Gap has nice clothes, but they don't look very nice at this store. Note - it is located in a landmark, a former bank, and if you have a minute, check out the iron doors, you won't see many in the city.
As soon as you enter, though the store is bright and spacious, the layout and items near the front of the store just do not make me want to peruse through their merchandise. Great if you know what item you're looking for, but if you're going for a browse, try another store.