Office, Study Room Type, Chair, Desk, and Light Hardwood Floor Bram sits at a table by Gispen in the oak-floored public side of the house, facing the water, while the dog, Bommel, relaxes nearby. “We really like the indoor-outdoor effect," says Bram's dad, Mark de Graaf. "The ground floor opens on three sides—on a summer day, it stays cool.”  Photo 8 of 13 in A Modern Take on the Pitched-Roof