(Reuters) – Europe’s biggest hotel group Accor said on Thursday its core earnings swung back to profit in 2021, helped by consecutive business recovery since April and higher absorption of fixed costs. “Despite a disrupted start of the year due to overall health restrictions, 2021 showed significant improvement in our business, as of the spring, with trends picking-up month after month right up to December,” Chairman and Chief Executive Officer Sebastien Bazin said in a statement. The group, which runs high-end chains Sofitel and Pullman, as well as budget brands such as Ibis, posted full-year…