Book future Category 8 hotels (85,000 points) at the Category 7 rate (60,000 points) until March 2019.
These were 35K SPG points or the equivalent of 105K Marriott points, with the all suite properties being at least twice that points level.

https://points-redemption.marriott.com/category-change
Save up to 25,000 points per night when you book future Category 8 hotels at the Category 7 rate until March 2019.

How far into 2020 can we book?
Marriott opens up award availabillity one week at a time on Saturdays. On 1 March 2019 we can book thru 15 Feb 2020.

Hotel list: (thank you, CPRich)
Al Maha, a Luxury Collection Desert Resort & Spa, Dubai
Blue Palace, a Luxury Collection Resort and Spa, Crete
Cristallo, a Luxury Collection Resort & Spa, Cortina d'Ampezzo
Domes of Elounda, Autograph Collection
Giardino Ascona, A Member Of Design Hotels
Giardino Mountain, a Member of Design Hotels
Gramercy Park Hotel, New York, a Member of Design Hotels™
G-Rough, Rome, a Member of Design Hotels
Hotel Cala di Volpe, a Luxury Collection Hotel, Costa Smeralda
Hotel Danieli, a Luxury Collection Hotel, Venice
Hôtel de Berri, a Luxury Collection Hotel, Paris
Hotel Pitrizza, a Luxury Collection Hotel, Costa Smeralda
Hotel President Wilson, a Luxury Collection Hotel, Geneva
Hotel Romazzino, a Luxury Collection Hotel, Costa Smeralda
Kenoa Exclusive Beach Spa & Resort, Barra de Sao Miguel, a Member of Design Hotels
Le Méridien Bora Bora
Mystique, A Luxury Collection Resort, Santorini
PalazzinaG, Venice, a Member of Design Hotels
Parklane, a Luxury Collection Resort & Spa, Limassol
Phoenician Residences, a Luxury Collection Residence Club, Scottsdale
Prince de Galles, a Luxury Collection Hotel, Paris
Santa Marina, a Luxury Collection Resort, Mykonos
Schloss Fuschl, a Luxury Collection Resort & Spa, Fuschlsee-Salzburg
Sir Joan Hotel, Ibiza City, a Member of Design Hotels
Suiran, a Luxury Collection Hotel, Kyoto
The Canyon Suites at The Phoenician, a Luxury Collection Resort, Scottsdale
The Chatwal, a Luxury Collection Hotel, New York City
The Gritti Palace, a Luxury Collection Hotel, Venice
The Miami Beach EDITION
The Prince Gallery Tokyo Kioicho, a Luxury Collection Hotel
The Ritz-Carlton Bal Harbour, Miami
The Ritz-Carlton New York, Central Park
The Ritz-Carlton, Bachelor Gulch
The Ritz-Carlton, Grand Cayman
The Ritz-Carlton, Hong Kong
The Ritz-Carlton, Kyoto
The Ritz-Carlton, Lake Tahoe
The Ritz-Carlton, Naples
The Ritz-Carlton, St. Thomas
The Ritz-Carlton, Tokyo
The St. Regis Aspen Resort
The St. Regis Bahia Beach Resort, Puerto Rico
The St. Regis Bal Harbour Resort
The St. Regis Bali Resort
The St. Regis Bora Bora Resort
The St. Regis Deer Valley
The St. Regis Florence
The St. Regis Maldives Vommuli Resort
The St. Regis Mardavall Mallorca Resort
The St. Regis New York
The St. Regis Osaka
The St. Regis Princeville Resort
The St. Regis Punta Mita Resort
The St. Regis Rome
The Wellesley Knightsbridge, a Luxury Collection Hotel, London
The Westin Golf Resort & Spa, Playa Conchal
Vana Belle, a Luxury Collection Resort, Koh Samui
W Koh Samui
W Maldives
W South Beach
W Verbier