Mambo Italia has three locations in Nairobi, but I've only ordered food from this one (maybe 5 times). The GF pizzas only come in 'personal size', and are a little too soft and floppy for my liking. but the mix of sauces and toppings are gourmet-great. It may be the reliably GF pizza in the city. Your friends who can eat gluten will find lots of other Italian food to enjoy as well.