Short-term rental needed

Hello neighbors. A family member is looking for a short-term rental for herself and her toddler son. She needs a whole apartment/house/side of a duplex, not just a room in someone else's unit, preferably with rent $800 or below. A July/August sublet would be fine or something month to month. Highland Park or Morningside would be fine, as would the Etna, Aspinwall, or Sharpsburg area. Furnished or unfurnished is fine. If anyone knows of anything, please email me. Thank you!