The hotel is adjacent to the KLCC Conv. Center, where I attended a conference. There is no need to walk outside; you can enter KLCC from the GF of this hotel.
Overall, excellent room (large size with 2 Twin Beds), considerable variety of breakfast, great location, great service.
They also help, at the Concierge Desk, in booking Grab Taxi - which are considerably cheap. I took a metered taxi from KLIA to the hotel - this cost RM150. The return trip to the airport, booked via Grab by the hotel, cost RM75.