Oniyanma Gotanda

Personally, I love this place and believe that it’s one of the best «Udon» places in Tokyo. The soup is crystal clear but its taste is very complex made of some special stock. My recommendation is the one that comes with chicken Tenpura and it’s absolutely amazing. You only spend JPY 400 – 500 and will be stunned how good Udon can be.
My only reservation is, if you have never had Udon in your life, I’d suggest you check out some other Udon places first. Also, if you are not used to testing stock-​based soup, I’m not confident if you could fully enjoy it. So, I’d say that some familiarity with Japanese food helps you understand why I’m so enthusiastic about their Udon.
There’s some system about waiting in the line and from which entrance you should go it, etc., but the staff will tell you in body language (if you don’t understand Japanese) so you should be fine. Basically, you just see the person in front of you and follow the person.
Again, their Udon is outstanding. You should definitely come check it out.