Traditionally, a powder room in a house, also known as a half bath or guest bath, is a small bathroom that typically contains only a toilet and a sink, but no shower or bathtub. It is typically located on the first floor of a home, near a common area such as a living room or dining room. It serves as a convenient space for guests to use. Despite its small size, a powder room can still make a big impact in terms of design and style.