Also, over the years, I've learnt the value of keeping it simple.

I want to run a web based application (https://github.com/honeytrap/honeytrap), configure it, monitor it, collect some logs, and update it.

What's the most light touch (whilst giving me just enough flexibility) to do so?

An obvious choice is something like a Digital Ocean VPS, but this still leaves me having to worry about (among other things) an OS and updates.

I have gone down the path of a managed kubernetes solution, but this actually requires quite a lot of overhead.

Any suggestions?