Loved our stay here. The tatami room was a big hit with our kid with the stuffed animals and it was a comfortable place to hang out when it wasn't bedtime. The entire apartment is quite spacious for what we expected in Tokyo.
Having soap, shampoo, and laundry detergent all provided was really helpful when landing in Tokyo.
Ikebukuro is an awesome place to stay and would recommend the neighborhood to anyone. Lots of places to eat, close to subway. Apartment location is quiet at night.