[Highland Park] looking for info on furnished, short-term, apartment rentals

I'm looking for options for leasing a furnished efficiency or small 1-bedroom apartment in Highland Park, Shadyside or other nearby neighborhood for 2-3 months this summer. I am looking for my parents, so the search is limited to buildings that do NOT have a lot of stairs (elevators are OK) and have easy access to nearby parking. Does anyone know if any of the larger buildings in Shadyside offer furnished apartments with short-term leases? There are so many different management companies that I wasn't sure where to start. Suggestions can be sent to me directly - Thanks! Martha Riecks mriecks@gmail.com