That Algerian fellow who runs that site briefly joined the old Ripper site but never stuck around.
The East River Hotel was known as the Fourth Ward Hotel 20 plus years before Stiehler is claimed to have changed it from the East River Hotel to The Fourth Ward Hotel and then Cambridge.
There was a Fourth Ward Hotel fifty years prior to the murder located at 445 Pearl Street which is less than a mile from the East River Hotel...
In the 4th Ward of Manhattan in 1870, there was a Shakespeare Hotel...useless fact.
In 1871, the East River Hotel, then known as The Fourth Ward Hotel, is mentioned in the NY Sun and its 'repute' ( all bad ) was noted.
The year after the above bad press, proprietor Herman Jaeger ( or Yager) shot his old lady in the face in the joint. I posted a few articles in the thread starter PDF.