If you sign up for the Frontier Hotels membership (free), you can access their perks at different hotels. I have booked a date in early December at Crown Towers Perth for three rooms for $399 each.
Perks at Crown Towers Perth include:
Daily Buffet Breakfast at Epicurean Restaurant for two guests per room
$130 AUD of resort credit, per stay (can be redeemed towards Valet Parking, Crown Spa and any Crown owned restaurants which includes In-room dining)
Upgrade on arrival (subject to availability)
Early Check-In (subject to availability)
Late Check-Out (subject to availability)
A bottle of French champagne in a suite or villa
Complimentary Wi-Fi
So essentially, with the Perks deal - the room costs me $154 for the night. $399 minus Epicurean breakfast ($57.50 X 2) $115, and the $130 resort credit = $154.
This price is not commonly available during the school holidays, but I did check the last week of Jan, and rooms were available with this deal for $489.
The website is a little slow to load, but it is worth persevering as this same room booked directly through Crown was $360.
Good bargain for a one night stand!