Recently started a support group in Rhode Island and we were fortunate that one of the guys therapists volunteered not only his time but also his office space for us to meet.
While at first I didn't want a therapist involved it has proven to be helpful to us. That being said you might want to check with some therapists for ideas on a meeting place.
I also have a sort of template for starting the group and how the meetings can be structured. If you'd like it I can email it to you...just let me know.