Sorry, but there is no such thing as "safe unattended updates" when you have anything more complex than your home desktop box. There's way too much that can and will go wrong to be that naive.
Safe unattended means no configuration files are altered and those updates are not adding new functionality in the first place anyway. It's only Package X.Y with security patch applied.
Actually your home desktop box should be much more difficult to upgrade than a simple generic server box with generic virtualized hardware drivers.
There are valid reasons to use service providers or maintained hosting but properly configured (and backed up) VPS running stable (& maintained) software can get you a long way.
