Very, very highly recommended place!
About Mas: I can't say enough good things about Mas. Our inbound flight was delayed until 1am and Mas was there to greet us and make us feel at home right away. He even helped us collect & hold our laundry for us because we were rushing to get to the Shinkansen on our last day! Amazing host.
About the Place: This is truly a spectacular location and a beautifully designed place. 5 mins walk from Yurakucho station with tons of amazing eats nearby. It was also within 10 mins of all the coolest spots in Ginza and 10 mins by subway to Tsukiji. We used the beautiful hot tub daily during our stay and after walking 20,000 steps a day, that it was a savior.
Would book again. Thank you Mas and Wow-Ginza.