In Spectre Dr Swan is taking Bond to Tangier in order to show him L'Americain, a secret place pointed out to Bond by Dr Swan's father, Mr White. L'Americain turns out to be a hotel, located in the ancient medina of Tangier.
L'Americain is, in fact, an old palace situated on Rue Ibn Abbou (very close to the Kasbah Museum, where the scenes during the Trade Conference in The Living Daylights were filmed). The name is the Palace of Abdeslam Akkaboune. It is a private residence which is currently undergoing some kind of renovation that appears to have been halted.