Red Cross convalescent house
The British and American Red Cross operated convalescent homes in France and England during World War I. These homes, sometimes situated in large country estates, were places where soldiers could continue recovering from injuries. Wounded soldiers were well enough to leave the hospital but needed a place where they could heal and be comfortable. Convalescent homes often had large gathering spaces -- similar to big living rooms -- for soldiers to talk and write and play cards, all the while being cared for by Red Cross nurses.
This convalescent home is not labeled with a location, but the British flag hanging from the ceiling might mean that it is in England or run by the British Red Cross.