Looks a whole lot like rundeck

As others mentioned it would to know what you plan to use the workspace for.

If it’s general configuration management and coding (text editing) an alternative to something like guacamole/rdp/vnc would be to use VsCode remotely over SSH. This lets you run code’s UI on a local machine but open and operate on remote files with little overhead. The other option is always ssh + tmux + vim, which is really lightweight, but probably harder to learn.

While remote desktop solutions work (like guacamole) they can introduce a fair amount of input latency which can be awkward.

It’s a bit pedantic, but it’s " substitute user and do" it’s doesn’t need to be root, that is just most commonly used