Check this site out: http://www.suzuranart.com/top.html
Though I'm afraid the English site has not been updated recently... You'll have to navigate the Japanese site:
1. click on BEAD SHOPS
from the menu bar, it will open to a new window with a menu bar for BEAD SHOPS on the left column
2. Go down this list: after the WEB SHOPS comes a red banner "ALL ABOUT...
" then comes a link for the following areas listed from the top - Hokkaido, Tohoku, Asakusa-bashi Shuu-hen, Asakusa-bashi MAP...
You will want the links for Asakusa-bashi (means Asakusa Bridge)
- where all the bead shops are - they are mostly open from 9:30 AM - to about 5:30 or 6 PM - not all are open on Sundays - you can also see there shop hours in the list.
a) Asakusa-bashi Shuu-hen
- link takes to to a page listing all the shops in the Asakusa-bashi area with clickable links to the shops with websites - showing the shop hours, prices and available products.
b) Asakusa-bashi MAP
- will show you a map for the area with all the shops listed marked on the map - including those for Miyuki Beads, Kiwa, Tokai and Beads House Mammy and a whole lot more.
I hope you have a lot of fun - you can easily spend the whole day in the area (and empty your wallet too
). The whole area can be walked - be sure you check the prices first - some shops offer some types of beads at lower prices.
For your sewing needs - the other posts on Fabric Craft stores have just about all the information and links you need.
Hope this helps and enjoy your stay in Japan