The Gladiator

Going back to your mansion, you climb the two flights of stairs and throw yourself on your bed.
You sigh wearily and fall asleep.

You wake up to the sound of something tapping on your window. Groggily, you sit up and shake the sleep from your eyes. You've only been sleeping for about an hour, because you can feel the sunset streaming in through your curtains.

*taptaptap*

There it was again. The small tapping noise, like someone was trying to get your attention over to the window.
You crane your neck curiously.

But then you hear a knock at your door.

*knockknockknock*

You glance at the window and then at the door. Which should you open?