Embassy Suites by Hilton Doha Old Town
booked King suite, no upgrade (1st stay, 1 night, Diamond status)

Waldorf Astoria Doha Lusail
booked basic room (King Deluxe) via Impressario rate, got upgraded to King Deluxe One Bedroom Suite, asked for a mini-downgrade to King One Bedroom Residence to have a microwave in the room because of the kid (1st stay, 4 nights, Diamond status)

Waldorf Astoria Doha West Bay
booked basic room (King Deluxe) via Impressario rate, got upgraded to King Premier (same room, different floor), hotel empty during Ramadan, quite a disappointment tbh, I even asked for a paid upgrade, nothing was offered (1st stay, 3 nights, Diamond status)