SPG is on a move with their airline partners right now with new bonuses from Delta, AeroMexico and now this one for Iberia Plus members. Remember if you are a British Airway Executive Club member this can apply to you as well since you can transfer Avios from Iberia to BA as long as you have had both accounts open for 90 days.
Offer details:
1,000 Bonus Avios when you stay 2 or more nights at participating Starwood Hotels Worldwide. Full details and online booking. Until Dec 31, 16
Find many more Iberia Plus Bonus Avios offers here!
To receive Bonus Avios, recipient must participate in the Airline Direct
DepositSM portion of the Starwood Preferred Guest program and
select Avios as their earning preference. With Airline Direct Deposit,
Starpoints earned from eligible hotel stays and select bonus offers will
be converted automatically into miles, will be credited to your Iberia
Plus account and may not be transferred back to your SPG account. For
more information visit www.spg.com/moremiles