An alley is the best place to leave your clothes while swinging around the city.
One of the most amazing shots in the film, as it starts a sequence where Peter crosses a street in Astoria, New York. The alley he enters is located in Atlanta, but the view outside the alley is the mural and shops from under the 31st St Bridge, Astoria. It does seem to be pretty clean for a New York alley!
This alley can be seen from the outside in the 2017 Baby Driver.
(Spider-Man: Homecoming, 2017)