We had a great stay in Vivian's accommodation, the location is excellent, 6 mins walk to two Metro station, 10 mins walking to Roppongi Midtown, we even cooked breakfast every morning before we head off, so comfortable and relaxing stay. Would definitely stay here again when I come back to Tokyo.
Also, Pinn (the girl who assisted us check-in) was very helpful, communication was very easy. Thank you Vivian and Pinn.