Stan H
Google
Say what you will about this place, the rice bowl is legit great.
There are no doubt a ton of tourists, but not just foreigners, also many local Japanese tourists.
And the beef is so good one is not enough. I ended up having 2x bowls in one sitting.
It opens at 6am, but I think the best time to go would be about 7am because there are always people waiting for it to open, but then after the first wave, it quiets down a bit until the next wave. So 7am is perfect timing.