Hisao-san's place is a bit out of the way but still quite convenient. It's about a 10–15 minute walk from Nippori Station, which is easily accessible via the Narita Sky Access train. It'll take you about an hour or so. It's also nearby Iriya Station in the opposite direction, which takes you to Ginza and Roppongi easily. The apartment itself is basic, but in a good way. There was tea, a water heater, a hair dryer, a bathtub, two beds, a table, a TV... If you're in Tokyo you don't really need much more because you should be out exploring! On the bed pillow was a little uncomfortable for me but is probably better if you sleep on your back.
Every morning without fail there was a little bag hanging on my door handle outside with half a sandwich, some fruit, and a little sweet treat inside. After my first day I really looked forward to it! I didn't explore the area itself much, but it's really quiet and cute while walking through to get to the train stations. It's easily navigable, not too many diagonal crossroads to get you lost, and Google Maps always told me where to go if I got a bit confused. I highly recommend staying here and plan to again when I go back to Tokyo (hopefully soon!) It's an incredible value—its location and the free breakfast can't be beat!