Best Airbnb in Kilimani with high speed wifi & Work friendly cafes with power backup Nairobi

I am a digital nomad trader coming to Kenya next month. I absolutely cannot afford power cuts while holding a trade. Does anyone know the best Airbnb in Kilimani with high speed wifi and guaranteed backup generators? Alternatively, drop your favorite work friendly cafes with power backup Nairobi where traders usually hang out and analyze the markets.