Yaesu: Okinawan
Ryutan (Yaesu: Okinawan)
Open 11am-11pm daily.
Sun: Open Sundays

This stylish space is decorated in a rustic island motif, with stone floors and walls and polished wooden latticework. The food is quite tasty, with plenty of daily specials supplementing the usual Okinawan standards like rafti (pork stew), goya champuru (stir-fry), Okinawan soba and taco fried rice. Lunch teishoku starts at Y980; budget around Y2000-3000 in the evening for ample food.

Chiyoda-ku, Marunouchi 1-9-1, Kurobei Yokocho (B1F).
Tokyo Beyond Sushi - the guidebook
Tokyo Beyond Sushi
Explore the hidden side of Tokyo dining
Charcoal-grilled pork on skewers, udon noodles in curry-flavored soup, octopus dumplings, deep-fried beef cutlet -- there's a whole world of exciting food in Tokyo that food-loving visitors often miss out on.

This book will introduce you to more than twenty of Japan's favorite specialty foods that are less well known abroad, along with a guide to the best places in Tokyo to try them and expert tips on what to order. From Bento.com.
Sister sites:
Craft Beer Bars Japan
Bars, retailers and festivals
Animal Cafes
Cat, rabbit and bird cafe guide
Where in Tokyo
Fun things to do in the big city
Neighborhood guides and top-five lists from Tokyo experts
Barking Inu
Sushi dictionary and Japan Android apps

Venue listing from Bento.com5 Star Rating: highly recommended