We use the possessive S after names of people, animals, time and place (to show possession).
Mickey's ears are funny (enkelv., 1 Mickey)
Alexis's room is beautiful (enkelv., eindigt op -s / Alexis'= OK too)
This cat's fur is so soft! (enkelv., 1 cat)
An hour's walk from here (enkelv., 1 hour)
I went to my friend's (house) (plaats, 1 vriend, niet altijd wordt het gebouw genoemd; the hairdresser's, the butcher's,...