[quote=The New Yorker]
What's Poland's infrastructure like right now? After the bombings and all, how well preserved is the city at this point? Also, are the streets just flooded with Nazi's?
[/quote]

Some Nazis are walking around the streets, especially after they'll start building the ghettos, but the streets are mainly filled with war refugees trying to rebuild the city. 
Again, as part of the Nazi ideology, they didn't have much reason to provide the Poles with basic needs, let alone rebuild their infrastructure. Buildings are still ruined and some are still on fire, as the water works are completely busted.

[url=https://www.youtube.com/watch?v=C8eAmFrPS7U]A good estimation of the situation in Warsaw is depicted in this footage.[/url]