We have AC in our apartment but the unit is in the living room and our bedroom doesn't get a lot of the cool air. I'd also second trying to unstick your windows, or get your landlord or whatever to do it. Also, a fan or series of fans as others have recommended. Maybe a Dyson airblade if you don't like the whirring sound of regular fans? Putting a fan in a window to suck in cool air kind of works like AC, assuming it cools off a bit during the night.
Also, get some gel-filled ice packs (the kind for putting on an injury, not the kind for putting into a cooler to keep food cold) and use them on your neck/back/etc. while falling asleep or even just relaxing when it's hot. I use this method even in the winter because it helps with insomnia (see this article:
http://www.scientificamerican.com/article/putting-insomnia-on-ice/ ) and also, take a cool shower before bed and go to sleep with wet hair. It's the opposite principle of wearing a hat when it's cold--most heat escapes through your head, so keeping your head cool keeps your overall body feeling cooler.
Also, for the street lamp light--keep your curtains open and get a sleep mask for your eyes!