Any recommendations for 2-week apartment stay in Chicago?

Looking for ideas! My parents are visiting for 2 weeks in July, I’m looking for a good deal on an apartment in the loop area for them. They don’t want anything flashy, no pool, gym etc, just a comfortable place to bed down. Most options I’ve seen start around $2000-$3000, but I may not be looking in the best places (i've tried the usual, Airbnb, Vrbo). Any recommendations for a good deal?