It was built in 1888 for Luang Sathonrachayut (Yom Pisolyabutra), the wealthy Chinese businessman who developed Sathon Road, and later served as the Hotel Royal, the Soviet embassy (later the Russian embassy) and, since 2015, a restaurant and entertainment venue for the W Bangkok hotel, known as The House on Sathorn.

In 1910, Luang Chitchamnongwanit went bankrupt, and ownership of the mansion fell to the Privy Purse (later to become the Crown Property Bureau) in 1916.

[1][2] King Vajiravudh (Rama VI) bestowed the mansion to Chao Phraya Ram Rakhop, and later, in the 1920s, it became the site of the Hotel Royal, under the management of Madame Staro.

The main mansion, the first to be built, is a two-storey structure in the Neoclassical style, with a central front porch and a three-storey tower in one corner.

The hipped roof is covered with diamond-shaped cement tiles, and the interior is extensively decorated with carved teak, with tin ceilings on the lower floor.