We recommend Fila Cleaner for your antique terracotta stone flooring. It is a mild soap cleanser with a balanced composition of natural and synthetic cleansing agents, supplemented with effective aftercare components.
Fila Satin or Longlife can be added to a small bucket of water after being washed to maintain the top finish.
Any stubborn marks can be removed with Fila PS87, an alkaline combination cleaner with a very broad range of actions.