[arethuza]

I did try using Google Maps on my phone in Marrakesh a few years back and it failed completely and left me with an astounding data roaming charge.

Easier to pay a local to walk you back to your hotel if you get completely lost!

[icebraining]

Nowadays Google Maps lets you download an area ahead of time, and then use it offline.

[izacus]

Still doesn't help since Marrakech medina has practically no streets drawn in on GMaps / OSM and you're not getting a GPS lock worth a damn. Your phone will just put you somewhere a few 10m off which can easily be another snaky street.

Maps are awesome there.

(This is experience from this year.)