Can you tel me more about La Paz - Villa Tunari buses?

by LPedersem
(DK)

Hi. I'm going to be travelling from La Paz to Villa Tunari, and I was wondering, after having read your page on bus transportation, if you can tell me more.

Is there a bus route from La Paz to Villa Tunari?
If you pick one of the more luxurious buses, does it have toilets/restrooms on board?