The Fourposter (1952)

The Fourposter is a 1951 play written by Jan de Hartog. The two-character story spans thirty-five years, from 1890 to 1925, as it focuses on the trials and tribulations, laughters and sorrows, and hopes and disappointments experienced by Agnes and Michael throughout their marriage. The set consists solely of their bedroom, dominated by the large fourposter bed in the center of the room. Its simple set and small cast have made it a popular choice for amateur theatrical groups.

More at Wikipedia.