Updates from July 2016....
London - Marriott Park Lane - fee for third person (child) in lounge was not enforced
Barcelona - Renaissance Fira - information is correct; 2 free for breakfast; free WIFI; €9 charge per person for more than 2 for breakfast - not charged every day
Madrid, Spain - AC Hotel Carlton Madrid - no lounge; no breakfast offered
Pamplona, Spain - AC Hotel Ciudad de Pamplona - no lounge; no breakfast offered