He has an incredible sweet tooth, which means bowls of hard candies, sugar in his tea, and eating deserts as a meal just because he can. The fact that there is an ice cream shop next door to his shop is convenient.
Rumplestiltskin can hear when his name is called over any distance.
There is a small village in the valley below the dark castle that supplies his straw, tea, and food. the tailor there is also responsible for the elaborate costumes. he provides her the material, and she makes his outfits. all are well paid and protected for their services.
Takes particular delight in capturing fairies. Pins them up like butterflies.
Known for stealing children, but what no one realizes is that he believes any parent that would give up their child to deal with him doesn't deserve to be a parent at all. all the stolen children are placed in a caring home, and he ensures they are treated well.
The dark one generally only sleeps about an hour each night, sometimes less, and his magic can sustain him if he doesn't eat or drink.
The pink house has only a single mirror. a hand mirror, locked in a drawer.
In storybrooke and ftl he has multiple houses. Storybrooke has the pink house, the lake side cabin, and the multiple buildings and apartments he rents out to various residents. Fairy tale land has the Dark Castle, a house by the lake Snow traveled across to find him, and various properties in other kingdoms that he acquired through his deals.
Mr. Gold's shop is right across the street from the library (per nerdy knowledge of stevenson/storybrooke) which allows him to see Belle when she opens and closes up for the day.
He prefers to get lunch at the fish and chip shop across from his store as opposed to visiting Granny's more often then not.