My list of top places to visit outside the US: 1) Bangkok 2) Accra 3) Malaysia (few days on the beach. few days in Kuala Lumpur) 4) Italy (various cities) 5) Tokyo 6) Mexico City 7) Lagos 8) Nairobi 9) Paris 10) ????
Ethiopia is an experience. As with much of SSA, tourist infrastructure is very underdeveloped. Helps to know locals or find a good guide. You will be uncomfortable in some way, but that’s part of the experience