We had a great stay (11 nights) in Mas' place! Mas met us at the property, was happy to care for our bags as we had arrived early and showed us about the place. The property is exactly as pictured and described. Close walking distance to Yurakucho train station, Ginza subway station and Hibiya subway station. It is also only 1 station away from Tokyo train station (only a 10-15min walk if you're interested!). The street it is situated in is flooded with restaurants, always busy and full of people. It was happening on Friday and Saturday nights. There is also a Family Mart and Lawsons about 30 seconds away for essentials. Ginza was a short walk and was great for shopping, a lot of upmarket stores and brands but also really good mid range items as well. There were no issues with finding English speaking restaurants or stores, people were more than happy to assist and accommodate needs. The property itself had everything you may want, and the bathroom - as everyone else has mentioned - is fantastic! Great to soak in the deep tub after a big day. Keep in mind that the apartment is on the 4th floor and the stairs are steep with no elevator. No issue for us but some may like to know before booking. Also, you can hear people walking up and down the stairs pretty clearly and while there are signs in the stairwell asking for quiet between certain hours, it can be loud so if you are a light sleeper this may be issue. The apartment is also located directly across from the train line. It is fun to watch all of the trains go by! I personally loved it but again there is a noise factor to be considered and the trains do run late into the night.
Overall would definitely recommend this property, it was fantastic for a first time stay in Tokyo.