I have no problem spending two weeks in Tokyo with only a couple of day trips out to other areas. I get pulled into so many interesting things in every neighborhood I visit I need at least a day for each, sometime two if I run out of time. There are a few flea markets but I have only managed to get to the one on the first Sunday of the month that's at the Togo Shrine in Harajuku. I've picked up some cool antique and vintage things.
Tokyo is currently the holder of the world's most Michelin three star (highest rating) restaurants which was a huge deal last year when they beat out Paris for the most three star dining spots. I think you'll find some perfectly good food when visiting Tokyo if you're a foodie.
