http://pointsmilesandmartinis.boardingarea.com/2016/07/starwood-3rd-night-free-mastercard/#_ga=1.166502846.1040053271.1469203072

현재 offer입니다

• Buy 2 nights, Receive 1 Free Night Offer
  • advance reservations are required
  • Offer is only valid for a three-night minimum/maximum length of stay.
• Buy 3 Nights, Receive 1 Free Night Offer
  • Advance reservations are required
  • Offer is only valid for a four-night minimum/maximum length of stay.
• Buy 4 Nights, Receive 2 Free Nights Offer
  • Advance reservations are required
  • Offer is only valid for a six-night minimum/maximum length of stay.

영어권 블로그에서 본건데 CITI PRESTIGE에서 주는 4TH NIGHT FREE랑도 같이 쓸수있는거처럼 말하네요. 자세한 출처는

http://monkeymiles.boardingarea.com/spg-buy2get1-free-mc-promo-stackable-citi-prestige/#_ga=1.196438316.1040053271.1469203072

만약에 된다면 2박 돈주고 2박은 공짜인데 대박딜이네요.