Funabashiya, the confectionary maker, has a store inside of the Muromachi Coredo Building in Nihonnbashi. After shopping, I was tired and discovered this shop. At first, I thought it was a confectionary store, which it was, but the shop also had a little sitting area where they were also serving green tea and sweets. The store was very small and it only had three small tables. I was lucky because another lady was just leaving so they cleaned the table for me without me waiting in line.
They served green tea in an iron tea pot. It was enjoyable to have tea with it. If you finish a pot, they will pour more hot water in if you would like more. The chewy, white mochi with sweet syrup and matcha/soybean powder was delicious.