Miri's apartment if anything is undersold. The bathroom is tight but otherwise the apartment is much larger and more comfortable than the photos suggest. The lounges, music collection, AV equipment and interior design helped relax even further. A nice change from the typical single room accomodation you find on a budget in Japan.
I would describe the location as inner suburban, neither inner city or suburban. 10min walk to station + 3min wait for train + 15min train ride = middle of Shibuya and on the Yamanote line. You would be paying twice the rate to stay in a shoebox and then only save 15 minutes travel. And if you intend to visit Yokohama you are on the right side of Tokyo, you'll save time and going against the peak hour flow.
Miri is friendly, responsive and fluent in English while at the same time non-intrusive. If a regular visitor to Tokyo or its your first time and staying more than a couple of days I highly recommend staying at Miri's apartment.