Beijing doesn't have any short-term leasing contracts. Anywhere. Not even in the suburbs. You should probably just live in another city. Well, I guess "probably" isn't a proper choice of wording, since it implies that you have a choice. No, if you want a short-term contract, you might as well cross Beijing off your list. Not gonna happen.
Hahahaha ... how short is "short term", and what's your budget? There are service apartments in that area, but they are usually not cheap ..
I am already in Beijing. Need apartment for 3 months. Budget 6,000. 1 bedroom.
(continued) ... I (randomly) found this one from google "service apartment beijing fee":
If your "etc" includes dongzhimen, I may have something suitable for you on short-term (3 months). You in the masters bedroom which has a balcony, a nice female housemate in the other room... You would share a kitchen and bathrooom with her, and I hope you share nothing more hehe... anyway, PM me if you want
oh.. BTW, no agency fee.. and it fits your budget perfectly. Reach me early if you want it