The locations for the "mother's last fried rice meal" scene and the chitlings with wasabi and shoyu scene are shown here:
http://tanken.life.coocan.jp/weblog2/?p=2074

The house with the fried rice scene was demolished some time ago, but the railroad crossing should still be there.

This page had a good round up of information about locations:
http://blog.livedoor.jp/mostly_bente...s/1612625.html

I don't read or write Japanese, a translation tool will give you the same sense of the information I got (it's actually finding pages in Japanese that I find trickiest)