[Some] "hotels have donated food and rooms for emergency personnel except for one:Trump"

Not "all". Some.

Las Vegas Review-Journal  "As hotel rooms across the country sit empty amid the COVID-19 pandemic, some operators are offering their properties to health care workers and first responders looking for a place to rest away from home.

"Las Vegas-based Diamond Resorts announced late last month that all open, Diamond-managed properties would offer complimentary accommodations to medical personnel and first responders. That offer includes Polo Towers, Cancun Resort and Desert Paradise Resort in Las Vegas."
. . . 
"Caesars spokesman Richard Broome said the company is not offering housing because it does not have staff working at any of its properties to service guests. Representatives of MGM Resorts International, Las Vegas Sands Corp., Boyd Gaming Corp. and Red Rock Resorts did not comment."
In the comments to this post:

The fake was to claim that Trump Hotel was the only not participating. I could not contain myself and decided to call another hotel in LV, Tuscany Suites and Casino, to inquire.and was advised that their management is considering but is not providing rooms at this time. Thus, Trump is not the only. I would have challenged similarly if Tuscany had been used instead of Trump in the original post. Just a false suggestion.

PnSfromLA  Los Angeles, Destination Expert for Las Vegas" commented:

"As an FYI the Trump campaign has been placing large food orders in many cities at locally owned restaurants and donating the food to hospitals, first responders in the area. That was leaked out about a week ago."

 "Aside from Polo, no Strip resorts, and I am being generous including it in that category, are providing rooms. One, that is a logistical and security nightmare. Two for most properties it doesn't make sense since the rooms have no kitchens (yes I know Trump does). Three, Vegas is compact with a great freeway system. It isn't like the hospitals are right on The Strip or the city is huge. Why is this even needed? These first responders are still getting paid and have homes. It isn't like NYC where most people don't have cars and EMS or hospital personnel have to travel a long distance on filthy subways."

At the above link there are many comments, pro and con. I chose these to stand by a president who donates his salary to charities and has no desire to enrich himself through his international connections, unlike popular Democrats who both held and sought the office of President. And rented out rooms in the White House. Tunnel Dweller.