If you are going to be putting together a homework group and trying to think of what would be a good setting, you may actually want to consider doing so at your local sandwich shop. You can learn about some of the reasons why a sandwich shop can be a great homework group environment here:
You can all sit a good amount of space from one another
Most sandwich shops have great seating for things like homework groups. They can have tables that seat larger sized groups. Or, if you need to move a couple tables and chairs closer together they generally won't mind if you ask them nicely.
Sandwich shops will usually offer you the right amount of noise
While there are some people who prefer a very quiet setting to study in such as a library, this won't really work for a homework group because you will need to be able to talk to one another to go over the material. Going to a sandwich shop gives you a normal level of noise, where the background noise won't be too loud, but you can feel free to talk amongst yourselves about the homework without having someone shush you to keep your voices down.
You will have access to food, snacks, and drinks
It's hard for many people to study when their stomach is growling. Once you become hungry it tends to be the one thing on the top of your mind and it's a thought that is hard to shake. When your study group is all set up in a sandwich shop, you can simply order a sandwich or other type of food they serve so you can continue taking part in the group while you eat. Plus, you will have access to a steady flow of drinks as well.
You won't have family members interrupting you
It can be hard to find the perfect home to hold a study group in for a variety of reasons. Some homes may have younger siblings that can be loud and disruptive. They may want to get involved and get in the middle of the group, even trying to color the pages of books. Some homes may have barking or overly active dogs that can bother the group. There may also be people coming in and out asking you questions that relate nothing to the study group. When you are in a sandwich shop, it's a more controlled environment.