The centre of Marrakech is about 15 minutes taxi ride. We can arrange for you to be met at the airport by an English/French speaking taxi driver, who will drop you off and walk with you to the house in the Medina (5 mins). If you have a lot of luggage he will arrange for a "Chariot" to carry your luggage for you. The streets of the medina are too narrow for cars.
Overnight from Tanger to Marrakech with ONCF. Said to be excellent.