Looking on the internet deeply has found these results:

I stayed at my friend's. is the most popular phrase on the web.

I stayed in my friend's apartment. 13,330 results on the web	I stayed at my friend's. 1224,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
And meanwhile, I have negative Sleeping in my friend's house is... one macaroni trucks, and I'm sitting in my friend's lap like a baby chimp. You made such a huge impact in my friend's life, someone I really looked up to. I stayed at my friend's apartment, I saw patients in another office, but he found me. I'll type in my friend's, since I'm expelled. No, please. I'm covered in my friend's human milk, so... This guy leaves, takes his car keys and drops them in my friend's pocket.	I'll be sure and tell my friends who stayed. Working the door at my friend's place. I threw up at my friend's house. I stayed at my friend's apartment, I saw patients in another office, but he found me. Of course I stayed friends with annie. At my friend's in Koenji. I slept at my friend's and needed a fresh...

I stayed in my friend's apartment.

13,330 results on the web

I stayed at my friend's.

1224,000 results on the web

More popular!

And meanwhile, I have negative
Sleeping in my friend's house is...
one macaroni trucks, and I'm sitting in my friend's lap like a baby chimp.
You made such a huge impact in my friend's life, someone I really looked up to.
I stayed at my friend's apartment, I saw patients in another office, but he found me.
I'll type in my friend's, since I'm expelled.
No, please. I'm covered in my friend's human milk, so...
This guy leaves, takes his car keys and drops them in my friend's pocket.

I'll be sure and tell my friends who stayed.
Working the door at my friend's place.
I threw up at my friend's house.
I stayed at my friend's apartment, I saw patients in another office, but he found me.
Of course I stayed friends with annie.
At my friend's in Koenji.
I slept at my friend's and needed a fresh...