Yoshikami in Asakusa is famous for its beef stew. Tender beef in a demi-glace sauce. Other popular dishes include the omuraisu (omelet enveloping ketchup flavored rice) and croquettes. The feel of the restaurant is like a diner from the 50s in the USA. Be sure to get a seat at the counter where you can watch the food being cooked in the open kitchen.
Yoshikami is a short walk from the temple Sensoji.
Taito-ku, Asakusa 1-41-4 台東区浅草1-41-4
http://www.yoshikami.co.jp (in Japanese)