I like Airbnb but I am surprised by their reputation as having expertise in front-end web development. The web UI is very slow to load and during on-page interactions, it is confusing to navigate between listing and related pages, and there are other badly designed aspects, such as the way that in order to select a menu item, one has to move the trackpad horizontally and then vertically to avoid dismissing the open menu while en route to the desired menu item.