Janifon, since they haven't answered your email, I would assume the answer is "no". Can you give them a call? Most of the staff have good English

Hi, Andreas. I stayed in Tokyu Stay Ikebukuro last month, for 2 nights. I also had the late night flight from Haneda to go home. Because I still had a seminar to attend until 5 p.m but the check out time was on 11 a.m, I dropped my luggage at the receptionist after I checked out for temporary. You can leave your luggage for free there. The staff will list your stuffs & you will get a receipt. When you want to take your luggage, just show that receipt. If the place you want to see around are far from the hotel, so it take time to get back there, you can put your luggage in the coin locker at the station. There are 3 size locker, S M L. For the L size, it costs 600-700 JPY/24 hours. Have a nice trip to Japan. :)

Orchid. I am so sorry. I am afraid we did not explore the Narita Airport Limo Bus option. We took the Keisei Sky Liner to Nippori Station then JR Line to Ikebukuro Station. It cost around ¥2,700 total per person. With a total Journey time of 1 hour from NRT to the doorstep of Tokyu Stay including the 5 minutes walk from Ikebukuro Station toTokyu Stay.