Speak to Marge at the Upstairs Art Gallery she gives art classes there and offers framing as well. Marge is quite an interesting person with lots of history to convey. Perhaps you can work something out with her.
http://www.getnj.com/jcarts/messages/126.shtml
She is in the Journal Square area.
Upstairs Gallery
896 Bergen Ave.
Jersey City, N.J.
(201) 963-6444

Thanks! Mana is super expensive and there's a waiting list.

I've emailed the JC Arts School and haven't heard back.

Any other ideas welcome!!

There is studio space at Mana Arts near Journal Square. I do not have the info.

Thomas from JC Art School has at least 2 artist studio spaces that are mostly but maybe not completely full. Both in downtown JC I believe. Jcartschool@gmail.com

Hi, I'm looking to rent a small artist's studio in the Lincoln Park area. Only to work in, not live.
Short term - 6 months would be ideal, but could be longer. Small, like 250-350 square feet. I don't need anything fancy or anything. Just a space. A spare room somewhere, whatever.

There's plenty of things available like this in Newark, but I'd rather stay in JC.

Can anyone help?

(FYI - since a couple of people have suggested it to me: Mana Contemp is super $$ and there's a waiting list)