The Holiday Inn-Days-Inn-Heaven on Earth inn was lastly the Plaza Downtown. It was "converted" to low income housing in the mid 90s and was constantly having problems with police and inspectors. They finally vacated everyone (about 180 residents) from the Plaza because of things like no working fire alarms, no fire extinguishers (they say tenants were reselling them on the streets) and no hot water.
Anyhow, since then, it has sat and collected dust and there have been plans to redo it, but like many other projects, nothing has taken off.
And from 1990-1996, a couple of people died there (both on the 22nd floor...creepy!)
Ref: Houston Chronicle - April 23, 1996, Slain man identified
Houston Chronicle - April 15, 1997, Hotel given time to correct problems/Last-minute cash relieves worst ills
Houston Chronicle - February 19, 1990, Man dies in fall from downtown hotel