I'd go with the diaper service, but for different reasons--I'd have a very hard time asking my neighbors to sign up for sharing laundry facilities with cloth diapers, knowingly or unknowingly. I realize this is a touchy subject, but our personal comfort with laundering our own diapers does not necessarily extend to every single person who may be using a communal washer, particularly in an apartment building where plenty of people live. For myself, I never considered washing cloth diapers while we lived in an apartment (when our second was born, and throughout her infancy); I just couldn't get past the certainty that it would seriously offend some of the people we lived alongside.
She's here! Baby Yoshiko arrived on 2/7/15, and now we are a family of five.