From a silent disco on the beach to a private ramen cooking class, Airbnb wants to play a bigger part in San Francisco tourists' itineraries.
Airbnb Experiences — one leg of the home-sharing network's rapidly expanding hospitality business — reported increases both in the number of listings and booking frequency since it launched in late 2016. Within the past two years, the number of experiences has gone from 500 in 12 cities to more than 30,000 across 1,000-plus cities around the world.…