I have used DO for project for several years now. You do have to do all the maintenance yourself. Upgrading between Ubuntu 14.04 to 16.04 had some issues that

I have used DO for project for several years now. You do have to do all the maintenance yourself. Upgrading between Ubuntu 14.04 to 16.04 had some issues that forced me to take the site down for half a day. Other than that, it has been smooth sailing. If you know how to do all the sysadmin stuff, I would say your fine in terms of using DO for production.