Yes, you can use the product images of the Amazon product that you're promoting in your hub. You can see those images in the Amazon product page where you can even see a larger size of the image and some products have a lot of other images. But I'm not sure if you can use the customer images though.
By "picture URL", do you mean showing the Amazon product itself? In HubPages, you just use an Amazon capsule where you can add Amazon products either by keyword or by putting the Amazon URL or ASIN or ISBN.
If you want to do it by keyword, just type in a keyword at the Amazon capsule. Otherwise, you can search for products at Amazon.com and then copy and paste the URL of the product in the Amazon capsule in your hub. You can also opt to copy and paste the product's ASIN or ISBN instead. You can find that number further down the page of the Amazon product in question.
After you put the Amazon products in the Amazon capsule, you'll see an image of the item, its price and its name. If you added those products by URL, ASIN or ISBN, you can also add your own description of the item.