Not sure everyone saw the changes that IHG made to the RA T&Cs when it comes to upgrades (it was highlighted on some of the blogs). For the IC Berlin it has an interesting and relatively wider exclusion list than for some other hotels who seem to exclude specialty suites only:
The type of room upgrade allocated is at the discretion of the hotel, excluding the following rooms:
InterContinental Berlin: All Club Suites & Presidential Suite.
Full T&Cs here:
http://www.ihg.com/intercontinental/...rms-conditions