Life / Car or no car to commute in Warszawa? (Warsaw) [13]

We are in the process of moving from US to Poland.
We have an option of bringing a car to Poland.

We plan on living in Warsaw, close to city center.

I am used to biking to work in US.

How bike friendly is Warsaw?

Real Estate / Mokotów (Warsaw) or other areas with kids? [4]

If one was to work at Rondo ONZ 1, in Warsaw, what would be the best place to live and commute,

And we have a toddler, so parks or playgrounds nearby would be ideal.

is Mokotow a good starting point?

Thanks!