Which address to state as my own at top of publication?

i am a MSc Computer Science student writing on a Work-in-Progress publication for ACM SIGCHI.

This format including PDF drafts is defined here: (http://ift.tt/1BnbPBn)!

At the beginning of the paper the address for each author is defined separately. Both my mentor (PhD student) and his Professor have their institute address standing under their names, both the same address (institute at our Uni for electrical engineering). Me and my fellow student are studying at the institute for computer science, i.e. another faculty with significant another address and we are not working nor having an office/address there.

What address should be stated under our names?

I think we need an address, under which letters arrive us, which I think is not the case for the electrical engineering faculty nor the computer science faculty of our Uni. Do you think so, too?

Consequently, I think our personal home addresses have to be stated. But then it appears strange or unprofessional, because it looks like we are not affiliated with anyone.

What would you think?

Thanks in advance!