Istanbul
If I play two repeat cards on the same place, how many times do I do the action?
Several replies agree and the card text says to repeat once per card, though one early reply disputed it.
Three times: the normal action plus one extra for each card, as the cards say to carry out the action one more time. A reply from 2017 says the designer confirmed this in a linked thread. One early reply argued that timing allows only two, but later replies and the card wording favour three. This applies to the Sultan's Palace, Gemstone Dealer and Post Office.