We use the genitive 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)
An hour's walk from here (enkelv., 1 hour)
I went to my friend's (house) (plaats, 1 vriend, geen gebouw genoemd)