You could also get something like
https://www.ebay.com.au/itm/Dual-USB-Extension-Socket-Dashboard-Panel-Flush-Mount-for-Car-Boat-Vehicle-MA950-/172374717373 and put it wherever you like really.
I thought about hiding one in the elbow storage area, like a lot of modern cars. would be nice and discreet and out of the way, not done it yet though.