If it's an intern offer, you might have trouble negotiating, but that definitely should not turn you off from attempting it anyways. Better for them to tell you no than for you to say no to yourself. You'll just want to make sure you have good justifications as you approach it. Do you have a competing offer, high cost of living, do you bring new skillsets that could help them out, etc. A lot of it you might not have, which makes it tougher, but still, you can't go wrong asking.