Mercado de pulgas Tisha-Wocka
Market quoted by Rockstar among the places of Vice City.
Vice City neighborhood quoted by Rockstar for its busy panaderías.
Little Cuba is one of the neighborhoods of Vice City named by Rockstar in the presentation of Grand Theft Auto VI. The official reference highlights its busy panaderías. The company has not yet published the limits of the neighborhood or identified which stretch of the trailers it appears in.
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In the description of Vice City, Little Cuba appears between Ocean Beach and the Tisha-Wocka flea market as an example of the city's variety of neighborhoods. The mention of panaderías suggests a commercial life of its own, but does not confirm visitable shops or specific activities at the launch.
Rockstar names Little Cuba and highlights its busy panaderías in the presentation text of Vice City. Without unambiguous plaque or identification in a scene, you can't assign the neighborhood a specific frame of the videos.
The name recalls Little Havana in Miami, a common association between fans. Rockstar didn't present Little Cuba as an exact reproduction of that neighborhood.
Rockstar Games — Only in Leonida: Vice City: https://www.rockstargames.com/VI/only-in-leonida/vice-city
Market quoted by Rockstar among the places of Vice City.

The beach strip and art deco hotels cited by Rockstar in the presentation of Vice City.

The main airport of Vice City, officially identified as VCI Airport on Grand Theft Auto VI signs.
Vice City Port associated with cruises in official description.