AWS Lightsail. Linode and DO are not cheaper. Seriously, compare the prices for yourself [0][1][2]. Linode and DO seem to have a reputation of being cheaper options, but they're not, and AWS isn't going to jerk you around with small-hoster issues like Linode and DO have been known to.
[0] https://aws.amazon.com/lightsail/pricing/
[1] https://www.digitalocean.com/pricing
[2] https://www.linode.com/pricing/