The Pleasanton Hotel is reportedly haunted by a courtesan, sometimes known as the "Lady in Blue," who was murdered by a guest when the hotel was originally a bordello in the late 19th century. Visitors and staff have reported a primarily benign presence, with the spirit often seen in mirrors and passing through rooms, fond memories of Pleasanton, and a tendency to kill flowers placed at the upstairs windowsill. The Lady in Blue: The most famous spirit, a former prostitute or courtesan, is said to have died at the hotel's original location after falling in love. She is described as a mostly harmless spirit who watches from an upstairs window and holds fond memories of the town. She is commonly seen in mirrors and passing through rooms. The Lady in Blue has been known to kill flowers placed at the windowsill, a testament to her distinct personality. The original hotel on the site dates back to the 1850s, and the murder is said to have occurred when it served as a bordello. The Pleasanton Hotel is considered one of the most haunted locations in downtown Pleasanton, with its ghost stories contributing to the area's haunted history.