I spent 6 weeks in Nairobi, Kenya this winter. It is NOT safe. (Even for tourists) I would definetly not recommend visiting this city in Kenya if you plan on having your honeymoon in Kenya.
A better choice in Kenya is Mombassa on the coast. Just a little heads up. I saw this article and my heart started racing. Nairobi is a scarry place even for the citizens of Kenya. I would not recommend spending on the of the most romantic times
of your life in that city.