For a lightweight usage like 1000 calls/month, Aris, I'd recommend checking out Heroku or Vercel, as they both offer easy deployment and a free tier that could comfortably handle your traffic.
For handling 1000 calls per month, I'd recommend Heroku for its ease of use and free tier option, or AWS Lambda if you're looking for something that can scale with your needs over time. Both provide robust solutions for hosting REST API endpoints with different pricing plans to suit growth.
Heroku or Vercel should be enough for this. Watch out for time-to-respond limits, streaming and RAM limitations. They are more crucial if you are looking for free service to start