The building in question here was moved in June, 2018 as detailed here
In 1984, David Foster Wallace was admitted to Grenada House, a mental health facility associated with Harvard University, housed in Building 6. He used his experience there as inspiration for the Ennet House Drug and Alcohol Recovery House described in-depth in Infinite Jest.
Those who waded through the footnotes to find this before the hint were:
- Lighthouse
- Paul Voestermans
- hhgygy
- Phil Ower
- Martin de Bock
- krenek
- Walter_V_R
And after the hint:
- Graham Hedley
- Garfield
- Nancy Barbato Sinatra