Barry visits his father at his remote cabin and tells him about losing his powers to Zoom in episode 2x20 "Rupture".
David and Mary Margaret escape the storm in a remote cabin in episode 1x10 "7:15 A.M.". Mr. Gold takes a kidnapped Moe French to his cabin to try and find his stolen heirloom in episode 1x12 "Skin Deep". Mr. Gold confronts August Booth about why he is in town in episode 1x19 "The Return".
Jack and Teal'c are relaxing on the dock when Teal'c receives a call from Daniel about the Goa'uld symbols in episode 4x13 "The Curse". Sam visits Jack to convince him to help them stop the Aschen in episode 4x16 "2010". From episode 6x15 "Paradise Lost". Appears in 1 more episode.
The gang takes Andi to Tony's cabin to prove his claims about the devil in episode #115 "Coming to Grips".
Ben offers his parents' cabin up to the newly arrived mermaids until they can return to the ocean in episode 2x01 "The Arrival". Maddie and Ben bring supplies to the mermaids and then try to come up with a plan on how to keep them safe for the duration in episode 2x02 "The Wolf at the Door". Deputy Staub comes by the cabin to ask about the ruckus at the gas station and sees the mermaid pack in episode 2x03 "Natural Order".