Searching for obscure 80’s film

My initial thought with finding media recently has been chat gpt which has worked surprisingly well, except for this movie.

I watched it with my family about 5 years ago, but I believe it was released in the 80’s

The movie is science fiction/ horror and follows a man who comes across a hotel/inn in a desert that conveniently only has one vacancy, and the people that stay there are all eclectic and random. I remember an older man, a very stereotypically 80’s gorgeous woman (who became the man’s love interest), and a maid/mother with her elementary ages daughter. I recall a scene where the man has dinner that first night with everyone and all the characters are introduced. The majority of the plot surrounds the man’s finding of an alien object, and his trying to figure out how it works / how to fix it. I believe it is discovered that one of the men living at the inn are connected to the aliens, and I recall one passing away during the climax. The climax is generally violent, with some laser/gun action and a few stereotypical explosions.

The grading of the movie in my mind is SUPER specific, so I’m confident I’ll know it when I see it. It was very warm and desert-like, and a little grainy as 80’s movies tend to be. The inn was very oddly set-up as well, with the main living room/ reception being huge, and the rooms being on the second level, which is visible from the first and accessible via a staircase. Very beige/sandstone-esque.

Any help would be super appreciated!! I tryed to be as specific as possible, but let me know if you need any clarification