Spring & autumn are the best time to see Marrakech in all its glory. Nov-April will be bright, but cold at night, whilst July-August will hit 40 degrees temperatures.
Travelling around Morocco is permitted, subject to presentation of a vaccine pass or authorisation to travel and wearing face masks in public spaces remains mandatory. It is worth paying a tour guide to get you orientated on your first day, especially in the warren of the medina, so that you make the most of your time whilst there.
If you have time, plan a day trip to either the Atlas Mountains, Sahara desert or ballooning - your Riad should be able to help arrange and book.
If you hail a ‘petit taxis’ they should turn on their meters, but often don’t. Make sure you agree on the price upfront. A ride from the New Town to the medina should cost no more than 40 Dirhams (£3.50)