Looking for a little design help, a friend and his wife recently sent me photos, a plan, a section, and a written program for a new bathroom in their mid-19th-century New England house. The room, on the second floor of a one-and-ahalf- story Cape, was 7 feet wide by 12 feet deep, with a window facing east at the short end opposite the door and a 4x5-foot alcove to the left of the window. The alcove ceiling followed the sloping roof down to a 4-foot-high knee wall. To the right of the entry door was a natural plumbing chase adjacent to the chimney. The budget was in the cellar. Their design had a tiled tub/shower in the alcove, the toilet