Looking on the internet deeply has found these results:

I stay in a hotel is the most popular phrase on the web.

I stay at a hotel 1316,000 results on the web	I stay in a hotel 1615,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Anyone can stay at a hotel. I'm planning to stay at the hotel. I happened to meet Miss Ventura and her son during my stay at a hotel in New York. I'm planning to stay at the hotel. Every time I stay at this hotel, you mess something up. And sometimes, I'd even stay at hotels on the weekend just because I heard they had great bathrooms or room service or really hot bellboys. Family doesn't stay at a hotel. Mama, I told you, we'll stay at a hotel until we find a house.	I think I'm going to stay in a hotel and find an apartment. I want to stay in a hotel near the airport. Everything is natural for you. However, I'll stay in a hotel. First and foremost I thought the director said I'd stay in a hotel. I'll stay in a hotel tonight, and... talk to a lawyer tomorrow. However, I'll stay in a hotel. I guess I'll stay in a hotel near here. I'll stay in a hotel, so I'm fine.

I stay at a hotel

1316,000 results on the web

I stay in a hotel

1615,000 results on the web

More popular!

Anyone can stay at a hotel.
I'm planning to stay at the hotel.
I happened to meet Miss Ventura and her son during my stay at a hotel in New York.
I'm planning to stay at the hotel.
Every time I stay at this hotel, you mess something up.
And sometimes, I'd even stay at hotels on the weekend just because I heard they had great bathrooms or room service or really hot bellboys.
Family doesn't stay at a hotel.
Mama, I told you, we'll stay at a hotel until we find a house.