I just used 2 more suite upgrade certs for an upcoming Asia trip:
GH Singapore: reservation describes room as "Grand Suite King 893sqf Grand Club Access Dvd Sitting Dining Area"
GH Erawan: reservation describes room as "Grand Suite King 1 King Bed:Floors 11-22:80 Sq M
ining Room: 2 Baths:Grand Club:Separate Sitting Room"
Will report back what we actually get.