Underground Restaurant, Alux, in Playa del Carmen Mexico. Must see

Unique underground experience right in downtown Playa Del Carmen MX.  
Google "http://www.aluxrestaurant.com/en/"

Address = Av. Juárez Mza. 217, Ejidal, 77710 Playa del Carmen, Q.R., Mexico

We were there 2015, very large, ... it's right in downtown, under about 4 city blocks of businesses right above it. 

 
Underground Map of Restaurant

Entrance staircase