Westin Chosun Seoul
Stay 1: upgrade to suite, executive lounge access. Unfortunately with midnight arrival and 8:30am departure didn't really get to enjoy the suite - but it was big
Stay 2: upgrade to executive room with lounge access (stayed through to 4pm checkout). Got 10 mins in lounge during happy hour, not that impressive but self serve alcohol
Sheraton Surabaya
Upgraded to suite (basically 2 rooms), pre-arrival welcome email with preferences, so I had some apples, chocolates, biscuits and a coke laid out on the table with welcome letter on arrival. Lounge access - reasonable spread. Really look after platinums here, staff very welcoming.