The Ikebukuro area is on the JR Yamanote line which rings much of central Tokyo. It was fine but there is not much to do there other than visit it’s many eateries. It is easy to get to other areas such as Shinjuku or Harajuku via subway from this apartment.
Some minor improvements are needed. The two smaller beds in the second small bedroom are not particularly comfortable and my daughters refused to stay in there. Instead they slept in the main room on one of the two beds there. Additionally the blankets available were fairly small. You could cover your chest or your feet but not both. Overall the location initially seemed daunting and tucked away in an large building but by day 2 we had no problems remembering the way there and back. Overall a good location and a clean, functional apartment.