Great:
Domes of Elounda (Crete, Greece) - Exceptional service,
Bristol Vienna - fantastic location, Exceptional service

Good:
Marriott Berlin - good location, very good executive lounge
Sheraton Grand Park Lane London - excellent location, good lounge
AC Hotel Bologna (Italy) - just OK
Marriott Skopie (FYROM) - just OK
Westin Sydney (Australia) - just OK

Average:
JW Marriott Singapore - excellent lounge, small room - small beds

Terrible:
W Barcelona - Tired room, bad service, very pricey