Our family of four ;two adults, two kids) had a fantastic stay at Masami's apartment. The layout, furniture and location are all A1 - we really enjoyed getting to know Hatagaya (great espresso at Paddlers Coffee, rum cocktails and a great vibe at LUG, and lots of lovely local restaurants). And it is only two stops to Shinjuku station! We walked into Shinjuku a couple of times with the kids - it was easy.
And Masami was the best host - I asked where she got the towels in the apartment from (I love them), and she gave me two band new ones as a present! So kind and friendly.
Overall, highly recommended.
:-)