Looking for a simple web hosting solution

Can anyone recommend a simple hosting solution for a small web service written in Python? Just an instance where I can run gunicorn and point a DNS endpoint at it would be great. I've been using PythonAnywhere up until this point which was perfect, except they don't support socketio which I now need. I'm trying to avoid services with complicated features and configuration like AWS, and I'm avoiding Heroku because I'd have to rewrite a bunch of the code to deal with the fact that they don't let you store persistent files.

Thanks for any suggestions!