HEL - Glo (outside customs), Hilton (outside the terminal)
DEL - Eaton Smart (departure area); Plaza Premium (arrivals area)
LHR T5 - Sofitel
LHR T4 - Hilton, Yotel (mezzanine level, charges by the hour, not quite capsule as earlier poster described it)
CDG - Sheraton (Terminal 2)
HKG - Regal (I don't recommend it)
FRA - Sheraton