Straight from the Telstra Landing page
Get 20,000 bonus points when you book and stay before 28 February 2022. Points are added to your account within 14 days of completing your stay.
Offer unavailable on bookings made through the Booking.com mobile app.
Booking.com needs to confirm you're a Telstra Plus member.
When you click on this link you will be redirected to the Booking.com website.
Offer unavailable on bookings made through the Booking.com mobile app.
Ends 28 February 2022. By clicking through to Booking.com, you agree to allow them to use your information in accordance with our privacy statement.
Would check how Cashrewards & shopback offers compare at time of booking, better getting real cash back than 20,000 fairly useless telstra points