Jnane Rumi, the best of Marrakech without the bustle

It’s a rare thing in Marrakech to find an old home with a large, mature garden that’s a five-minute drive from the medina. Wide, shaded lawns, multiple terraces, 150-year-old olive and pistachio trees: if it has all that, chances are to get to it you’re looking at a bit of a slog out into the 54 square miles of the Palmeraie, the oasis planted by the Almoravid dynasty in the 11th century.

But at Jnane Rumi, an 11-bedroom estate owned by Dutch art lawyer Gert-Jan van den Bergh and…