Thanks for the tips. Did asked for free upgrade this morning, but got this:
"Thank you for choosing Novotel Citygate Hong Kong.
Well noted for your upgrade request, however, regret that free upgrade to Executive Premier room may not be arranged.
You have booked our Standard room and we will put a request for free upgrade next room category which is Superior room, subject to availability.
We look forward to welcoming you to hotel soon."
Oh well, back to HKG SQ/TG/UA lounge for my breakfast then!