We had a pleasant stay at this apartment. Even though it's smack in the middle of Chūō, a suit-and-tie type business district, the apartment's location is quiet, offering a restful stay, even on working weekdays.
The apartment is well kept, clean and has everything you need. Check-in was a breeze; just get to the building and get in the room. Guests should take note that the apartment has four other guest rooms sharing the same toilet and shower room. But it hadn't been a problem as guests can opt to use the toilets on the higher floors, and we hardly saw our neighboors all week anyway despite the apartment being full. The room we booked is meant for three people (there's a folding sofa bed aside from the double bed), and it was only my husband and I so we had plenty of space. Oh, and the bed--it was so comfortable it's hard to get out of it in the morning, hahaha. Wifi internet was fast and reliable.
Depending on the guest's physical condition and personal preferences, it may be a bit of a walk to and from the apartment building. My husband and I are expert walkers so we were able to walk home from Yurakucho/Ginza (I'd say it was 15 minutes on foot, give or take), and on another night, from Akihabara (around 20 minutes). We discovered that the nearest Metro accesses were Kodemmacho (Hibiya line) and Mitsukoshimae (Ginza and Hanzomon lines), from which you could easily ride to another station junction and switch train lines. Tokyo Station is a little farther, but if you don't mind the distance (10-15 minutes on foot) or if you want to save on train fare, then it'll be the best jump-off spot for you. Just have a rail map on hand (or mobile internet connection) and research your destination ahead of time and you'll be perfectly fine.
The immediate area offers a wide range of dining options from restaurants to hole-in-the-wall joints to konbinis (convenience stores) so no worries of starving even on weekends when offices are mostly closed. We often spent more time trying to decide where to eat than finding one; food spots abound.
It was Kan who we first talked to when we were booking and he was responsive and helpful, even going out of his way to check the best transportation options from and to the airport for us months before our stay. During our trip, it was his brother Yoshihito who received us and he had been a kind host, lending us his pocket wifi (which has been a huge lifesaver exploring this fascinating city!) and even umbrellas when it started raining toward the last couple of days of our trip.
Super glad we chose this place. We definitely recommend it. Thank you, Kan and Yoshihito, for hosting us! :)