Safehouses in Grand Theft Auto Advance (known as Hideouts in-game) are represented by a pink dot on the map. Standing in front of the safehouse on the blue circle will bring up the options of restocking ammunition and saving the game. Although there is a garage at each safehouse the player cannot save vehicles. 

Image Name Location Unlocked by
Portland Hideout Hepburn Heights, Portland Island Jump Start
Staunton Hideout Belleville Park, Staunton Island Show the Money
Shoreside Hideout Pike Creek, Shoreside Vale Bad Pimpin'