A.H.
Hi, I live on Patrick Henry Village (PHV) in Heidelberg. There is this neighborhood, or Mark Twain Village (MTV). If you want to be closer to German stores/neighborhood, then MTV is for you. PHV is kind of away from that stuff, but we do have the commissary on our post, along with the theatre, thrift store, 24 hour shoppette, bowling alley, library, etc. Also the elementary and middle schools are located on PHV while the high school is located on MTV.
The apartment we live in has dual voltage (no need for transformers!), its own washer/dryer, and a balcony. However, not all apartments on PHV are like that. I think all the apartments on MTV only have German outlets, communal washer/dryers and no balconies. But they seem bigger to me. So really I think it's up to your personal preference.... if you want to be closer to the German community or not.
Hope that helps! If you have any other questions, let me know. I've lived here for 4 1/2 years.