The San Francisco Property Information Map states that "this property is associated with Albert Pissis as the architect of merit." The entry also states that the the architect was Milton Lichtenstein and that the historic name of the hotel was Hotel Kensington. I searched the web for information about Pissis and Lichtenstein, but the web contains little Pissis and less Lichtenstein.

Perhaps Chat GPT could dive deeper.

I asked ChatGPT: "Who designed the building at 580 Geary Street in San Francisco?""

ChatGPT responded: "The building at 580 Geary Street in San Francisco, known today as the Warwick San Francisco Hotel, was designed by Arthur Brown Jr. Brown is a celebrated architect best known for iconic San Francisco landmarks such as City Hall and the War Memorial Opera House.""

Wrong Hotel. The Warwick Hotel is situated a block away at 490 Geary Street. The hotel's website agrees that that Arthur Brown Jr. was the architect stating that "the Warwick shares the same architect as San Francisco’s Coit Tower and City Hall, Arthur Brown Jr. Affectionately called the 'The House of Sunshine', this Beaux-Arts style hotel was established in 1913.

I modified my query and asked: "Who designed the Savoy Hotel in San Francisco."

ChatGPT responded: "The Savoy Hotel in San Francisco was designed by Albert Pissis, a notable architect credited with introducing the Beaux-Arts architectural style to the city. Built in the early 20th century, the Savoy Hotel was part of San Francisco's reconstruction efforts after the devastating 1906 earthquake and fire. Pissis was known for his elegant and classical designs, and the Savoy Hotel reflected his mastery of proportion and symmetry.

I asked about San Francisco architect Milton Lichtenstein.

ChatGPT responded: "Milton Lichtenstein was a notable architect in San Francisco during the early 20th century, recognized primarily for his work on the Edison Theatre at 27 Powell Street, a project completed in 1915. However, information about his broader portfolio or additional works, such as the Kensington Hotel or other buildings, is limited. Lichtenstein's contributions are documented mainly through his theater designs and renovations in San Francisco. If you're looking for more details about his projects, you might find additional context in local historical archives or records related to San Francisco architecture and preservation.

As a reservoir of knowledge, the world wide web is not as deep as it seems.