It really depends on the situation.
Now if it was just for raw sex – As soon as you walk it the room, push her up against the wall and start with a deep passionate but forceful kiss. Proceed by tearing each other’s clothes off. Bed her over the nearest chair, table, or just plain bend her over. Fuck like two wild animals. When done go down to front desk tell them you changed your mind about the room and get your money back. (Or better yet do it someplace real naughty like the fitting room at a department store) Go on about your day. By that night after thinking about your wild attack all day you’ll do it again I guarantee it.