For a weekend trip to Vienna, we stayed in Hilton Vienna Park. We booked a room at hilton.com for 140 Euros/night. Being a Diamond member with HHonors we were automatically upgraded to an Executive Room at Check-in. A friendly request for a suite brought us into a 10th floor Park suite with approximately 80 square meters.
We had a 4 day stopover in Doha, Qatar on our flight back from India. The first night we spent in the Ritz-Carlton Doha, but it was an old concrete bunker with small rooms. So we cancelled the remaining nights and called Hilton to ask, wether it is possible to secure an upgrade to their Panoramic Suite. I was assured, that we get it, if it’s available.
During our 3 month stay in Delhi, we did a weekend trip to Mumbai. We booked the Four Seasons Mumbai for ~120 €, which must be the cheapest Four Seasons in the world. Having no status at all, we got upgraded to a Deluxe Room on the 30th floor, just by asking.