I don't think there are any hotels called 'Benin City'.
you can request it by reception, they can help you get the coins.
Hotel City is game that you can find on Facebook. To be able to play it you have to have a facebook account.
The capital city of Benin is Porto-Novo.
The Four Seasons, the Sheraton and the Nikko are regarded as some of the best there are in Mexico City. Be aware, those hotels are quite expensive (US$ 220+)
Four Seasons, Mexico City.