One of my favorite programs on Linux Mint is the simplicity of X2GoServer and its X2GoClient to remote desktop to MATE Linux among my servers. It works incredibly reliable, solid.
Server Side
sudo apt-get install x2goserver x2goserver-xsessionThen configure the /etc/ssh/sshd_config file on the server to allow any clients access, for example with a AllowUsers user@ip
statement at the bottom of the config.
Client Side
sudo apt-get install x2goclientHappy Coding!