Not a lot of shops nearby, but 4 minutes from the Otori line so you could get places quickly and very good access to the airport. Although they have a free shuttle it makes you check out early at 900 the latest, and you can’t check in at the airport until 11am for international flights
Traveloka Sdn Bhd (No. Pendaftaran 201501003122), Tingkat 14 Menara 2, Menara Kembar Bank Rakyat, 33 Jalan Rakyat Brickfields, 50470 Kuala Lumpur, Malaysia