Ethiopian Airlines has a large global route network through its Addis Ababa (ADD) hub, as the airline flies to four continents from there. The airline offers a fairly pleasant onboard experience, including in business class, even if there are a bunch of different seat types.Given the carrier’s complex network, in some cases, passengers might find themselves with an extended layover in Addis Ababa. The good news is that if your layover is long en…