I did not expect this hotel front desk to not offer luggage forwarding service. I was told by the staff to go to the attached Family Mart or the nearby Yamato Transport (already closed at 1pm!) to mail my luggage... True that the Family Mart is just right by the corner, but it's quite a busy location and it's a pain to line up with large luggage in a convenience store... especially when there were no other customers at the hotel front desk!
The building itself is slightly dated. Because it's a large hotel with 30 floors, despite there are 6 elevators (not sure if they are all on), the wait to get downstairs can be long if there are a lot of people checking out at the same time. I had to wait 15 min to get to the lobby on a Sunday at 9am, because the elevators are already full when it reaches my floor! The bed is comfortable, but the room quite small and tight for 2 people, and this isn't a business hotel... The shower, toilet and sink are not separate. There is no vent with the washroom so smell lingers.
There are 7 laundry machines so it's very convenient to do laundry at this hotel. It's attached to the Sunshine City mall and also easily walkable to other shopping area in Ikebukuro. It's ~10 min walk to both Higashi Ikebukuro Station and Ikebukuro Station. It has an airport limousine bus stop outside the lobby for both Haneda and Narita.
For the price point, this stay was overall disappointing. Ikebukuro has many options that are more convenient.