Originally Posted by abmj-jr

That actually is not ramen. It is somen, a very thin wheat noodle that is served cold (the water in that trough is quite cold) and plain. It is consumed with a mild but flavorful dipping sauce.

The restaurant in question does not take reservations, which may explain your inability to contact them. He also reserves the right to not offer that meal whenever conditions are not quite right, such as in rainy weather or when the river has risen. To me, that means his seating is out over the river. I suspect you will just have to take your chances and arrive, hoping there will be seating for you. Their hours are 11:00 am to 4:00 pm.

Some restaurants and most clubs in Kyoto are very tradition-oriented and some do not encourage foreigners to patronize them. For example, most "geisha" tea houses will probably not admit you. I am not familiar with that property but would have a back-up plan for lunch if you are not served there.