This apartment is AMAZING. Don't hesitate, book it now. It is in the perfect location(just blocks away from Tsukiji!), stylishly decorated, full of brand new appliances, sparkling clean, and featuring the most comfortable bed we slept on in our entire two weeks in Japan.
Further, the local tips were incredibly helpful! One night for dinner we went to the local gyoza place recommended by the management, and had the most delicious gyoza I've ever eaten in my life, as well as a wonderful night drinking and connecting with locals(including two artists we made friends with!).
My husband especially raves about this place, he keeps saying whenever we go back to Tokyo we will always stay with this company!
Local tips from me are: get breakfast every morning from Tsukiji. I especially recommend the taiyaki from the little old lady in the stall next to the mochi stand, and the tuna donburi bowl from the stand all the way at the east end of the market. I've never had better, fresher tuna, and there is no better way to start your day than with fatty tuna and freshly grated wasabi! Also, you have to try the gyoza place. It's in the binder management provides full of local restaurants.