Biking in Nairobi

Hi everyone,

I will be living in Nairobi for 3 months from June to August.

I don't have a driving license and am used to get around cities by bike, here in France.

So I was wondering, is it convenient and relatively safe to get around Nairobi in bike ? In Westlands, Riverside, Kilimani, the city center ? What about late by night ?

Do you have any hint on where I could rent or buy a second hand bike ?

Thanks,
Bertrand.