BusinessweekA Week Inside a Hacker HostelTake a tour of 20Mission, the San Francisco crash pad for tech entrepreneursAdonis Gaitatzis, founder of hardware company Net Ninja, with Lior Neu-ner, an app developer, doing whip-its (nitrous oxide: Go ask Alice), while some friends get to know each other better. Photographer: Ashley Gilbertson for Bloomberg BusinessweekFacebookTwitterLinkedInEmailLinkGiftFacebookTwitterLinkedInEmailLinkGiftBy Ashley GilbertsonJuly 14, 2015 at 8:00 AM EDTBookmarkSave