Hot Apartment!

Hot Apartment!

So I have been primarily lurking for the past few months...but I just moved into a new studio apartment in Baltimore, MD. It's a very LARGE studio and very spacious with tons of storage options (I will post pictures in a few days once I finish emptying boxes and such). The problem I am having (and it was an unforeseen problem because I was never shown my apartment before I moved in--just a floor model) is that I am on the 10th floor on the sunny side of the building with 4 large windows being blasted with sun. It gets SO hot in here (currently 88.7 degrees) that I don't know what to do! We do have an AC unit that was provided by the building, but I hate running it all day because its gonna be so expensive. I have a fan running but obviously that isn't doing much good besides blowing around hot air. The air conditioner feels good obviously when it is on, but I know its overworking and not doing as good of a job as it could because of the sun coming in and beating on it...I am sitting at my desk now and can feel the heat coming from the windows. They have already provided white mandatory slat blinds on the windows...and I think (need to check in a few minutes when the leasing office opens downstairs) that we can hang draperies as long as it still appears white from the outside. I didn't originally want curtains, but now I think it's a must, but I also have plaster walls...so I am not sure how to even go about hanging a curtain rod and heavy curtains? Any suggestions on how to hang a rod and what type of curtains to get to cut down on the heat entering the rooms? I am going to find out if window fans are allowed today as well, because I feel like running window fans at night would be brilliant, since it cools down very nicely here at night, but with little to no wind, rarely does the cold air come into the room. I realize that this problem will not be a problem at all in the winter--but right now I am melting! Any help would be Greatly appreciated--I can't enjoy my new place in this heat!
My Room.

My Room.

reusing grocery bags

reusing grocery bags

Plant ID please

Plant ID please

Discoveries in the garden

Discoveries in the garden

Seeds

Seeds

Tomatoes

Tomatoes