Cost of living nairobi

i am currently in mombasa for work and looking into transferring to Nairobi,could someone tell me how accommodations and living in Nairobi is like?whats the average cost of living in a studio apartment around lets say westlands?i really don't know Nairobi,so i would appreciate suggestions on where i should stay if i will be working in the heart of westlands.

If you are mindful on the rent you can try Ngara,Parklands,Lower Kabete the places arent far from westlands so will be convinient to get to and from work!