Not all Airbnb users are treated equally, it seems.

NPR hosted a Twitter chat on Friday, building on the hashtag created by Quirtina Crittenden, #AirbnbWhileBlack, to hear the challenges that black Airbnb renters have faced while using the website. The response was resounding. Black Twitter aired its frustrations with the service and many people reported having difficulties when trying to book places to stay.

#AirbnbWhileBlack I've tried to book in NYC, NJ & at least three other locations & have resorted to hotels as all 12+ rooms were canceled. — Jordan Lebeau (@_JordanLebeau) May 5, 2016

#AirbnbWhileBlack i have a professional looking profile, a white-friendly witty one liner and assert being educated. What a time. — Charlie da Casanova (@bigsexydraws) May 5, 2016

#AirbnbWhileBlack having to use your middle name and a picture of a landscape so people don't discriminate 😂 pic.twitter.com/oXfEvrAI3s — Rah. (@thatguydream) July 16, 2015

Wow #AirbnbWhileBlack recently used the service & had the HARDEST time bookn. Host(s) just flat out didn't respond. https://t.co/lL8hcC9OAq — JaQe Vokalz Elder (@iVokalz) April 29, 2016

The tweets follow a report by Harvard researchers -- which analyzed listings in Los Angeles, Dallas, St. Louis, Baltimore and Washington, D.C. -- and found that fictional guests "with names like Lakisha or Rasheed were roughly 16 percent less likely to be accepted than identical guests with names like Brent or Kristen."

David King, Airbnb's head of diversity and belonging, responded to the allegations of discrimination in an email to Mashable.

"We recognize that bias and discrimination present significant challenges and we are taking steps to address them," he said.

Learn more about the story in the video above.