Pros:
1) Location: less than 200m walk to JR Okubo, 12mins to Shin-okubo and 15mins to Shinjuku
2) Convenience: Okubo Stn has elevator and saves you the hassle of hauling your luggages up and down the train station stairs. Connecting stations like Shinjuku and Yoyogi have elevators too. If you have heavy luggages, the elevators are massive help
3) Food and others: Shin-okubo is Korean Town and has plenty of restaurants, convenient stores and pharmacies open till late
Cons:
1) Bathroom: very small and difficult to maneuvre getting in and out
2) Beds: has a double-bed and will not be enough room for 2 persons of slightly above average size. Mattress and pillows are slightly dated and not firm enough. Blanket is a bit small for 2 persons
Overall: Michi was nice to meet us at the station and showed us her place. All in all the place has the basics required for a pleasant stay and for me, the location factor overweighs the downsides