Russell Simmons should pipe down -- at least according to Ben Stein, who tells TMZ, he's "very impressed" with Mayor Bloomberg's response to Hurricane Sandy in NYC ... even considering the homeless situation.
We posted a video of Simmons early yesterday, in which the hip hop mogul criticized Bloomberg for overlooking homeless people in the Sandy relief efforts -- saying NYC's homeless were "f**ked" after the storm ravaged the city.
But later yesterday, Stein told us, NYC seems to be "incredibly well-prepared. I'm very impressed frankly. I think they've done quite a good job."