By Diana Mandia and Dina Kartit (Reuters) – Europe’s biggest hotel group Accor reported higher than expected third-quarter revenue per available room (RevPAR) on Wednesday, continuing a sharp improvement in activity since the start of the year after a “gorgeous” summer season. The easing of COVID-19 curbs earlier this year led to a boom in travel demand after more than two years of restrictions, allowing the hospitality sector to increase its profit forecasts and report higher revenue per available room. The group, which runs chains such as Sofitel, Pullman and Ibis, said its third-quarter Rev…