Hi, I graduated from UD in 2015, so it might be a little different, but here's some of what's good about the Newark area:
UD has free buses that go around the campus so you can get to the North/Center/East/West/South area of the main campus pretty easily
There's a lot of food/stuff to do on Main St if you know where to go (it was a little different when I visited it a year ago, but it's got quite a bit there!)
I would suggest getting a bike (if possible) if you don't want to rely on the buses because they can be a little wonky with their times/not come soon enough before your class, I used to bike there all the time
If you take summer classes, bring a hoodie, they blast the AC - this is specific to the UD campus and just something everyone should know lol
Public transport exists but it's not the best (buses)
UD also has a lot of resources for international students iirc, and they have The INNternationale House: http://www.theinnternationale.org/
It also depends on what kinds of things you're interested in doing. I lived off campus, about a 30 minute walk away. Biking was easier, but I was near apartments where the UD buses picked up so I could go there if I needed to. I walked to bars, my Tang Soo Do dojo, and the grocery store alright (the grocery stores can be a little far, though). There was a small Chinese market and a co-op at the end of Main Street when I lived there and I did a lot of grocery shopping in both of those places, with more stores beyond that, but depending on where you live, it's a bit of a walk. If you walk to get groceries, I highly recommend getting a rolling cart for groceries so you don't hurt yourself hauling it back (which is what I kept doing to myself).
Also, other options for housing can be found here: https://udel.uloop.com/. I found a pretty good place that was a three bedroom for $1,000/month in 2013/2014, so it might be a little more expensive now, but we were splitting it between 3-4 people, which made it really affordable. Let me know if you have any other specific questions!
