CTM Bus station Marrakech is located in an area of Gueliz, which is a Marrakech suburb.
The distance is walk-able in a few minutes or so.
On a hot day or if you have luggage it might be best to get a Taxi for the short journey.
Gueliz is considered a central location in Marrakech and is a few minutes journey time from Marrakech Medina.
CTM Bus company is a national Bus company, operating across Morocco.
They also have international routes to Spain available via their franchise arrangement with Eurolines.