Kurechi Udon
Yoshida Udon restaurant 3 minutes walk from Kotobuki Station (Fujikyu). Tabelog 3.57, 358 reviews. All handmade noodles - you can watch the noodle-making process. Seafood dashi with miso-soy broth. Affordable from 450 yen.
Chewy handmade noodles and classic broth are well-regarded. Popular with both tourists and locals for the rare experience of watching noodle-making. The affordability at 450 yen is also appealing.