Many thanks to Letcia C. for sharing a photo on FB and to @LavenderFlo for tweeting the link to the site.
Update: Many thanks to @NarisaTrammell for sharing a photo on twitter. the photo was posted almost an hour ago. Considering his clothes, it appears that he is still in Austin.
Update X2: Many thanks to Gaurav S. for sharing a photo on FB. The photo was posted abut 7 hr ago and was taken at the JW Marriott, Austin.
Update X3: Many thanks to defajardo who shared his selfie with Keanu at the Marriott on both twitter and webstagram. In his comment he said that Keanu stopped to take the photo even though he just wanted coffee.