There was a small restaurant on the same floor as Two's Cabin (the カレー店, a.k.a. Curry Shop), which had a few people waiting in line outside the door. I think when he first showed up, Masaki (owner and founder of Two's Cabin) assumed I was waiting to be seated at the restaurant and not for Two's Cabin to open, because he was a little surprised when I poked my head in the door.

I was glad I'd followed his Instagram prior to my journey, since I at least knew from the photos that I was in the right place.