I can't find much on this place. It was built in 1920, and like so many of these towns in the Rio Grande Valley, which were started by Anglo real estate developers, a hotel was needed to put up the hordes of Midwesterners who flocked down as potential land buyers. As with so many hotels down here, the San Juan was built as a Spanish-style tropical fantasy to further enchant clients. A YouTube video claims that the hotel is haunted and that a prostitute was murdered there, but one thing I've learned is that every old building seems to come with a legend of being haunted by someone who was either murdered, committed suicide, or died under mysterious or tragic circumstances. I've come to take all that with several grains of salt. I've been in so many of these allegedly haunted buildings and never experienced anything slightly strange or mysterious.