I would recommend whoever visit Tokyo stay in Sei's place. Their house is close to the train station and there's one 7 eleven close by where you can drop by for some food/drink all the way home. The house is big enough for 5 person. Sei is also a friendly and helpful person. Very responsive to our request. One of the best host I've met.
Thanks for your accommodation Sei. Arigato! :) cheers