Sheraton Ontario Airport Hotel
429 N Vineyard Ave
Ontario, CA

Found 4 reports:

I stayed for one night in March 2014. I had about 20 insect bites. Some of them were under my clothes and armpit. I went to a dermatologist and confirmed that they were insect bites. They were about quarter size swell.
Notified the hotel. They claimed that they sent professional to the room for investigation and could not find any problem.
Looking at the past history on this site of this hotel, there seems to be a trend of reported problems in the last few years.

January of 2013 when we walked into the room and turned the light on we saw a cockroach run across the white comforter.

I stay in king bed on the 6th floor club room there were bed bugs on the bed skirt

Woke up being it bug was fully engorged with my blood.

9 bedbug reports near this address:

Doubletree Hotel Ontario Airport 0.289 km
Red Roof Inn Ontario Airport 0.527 km
Holiday Inn Ontario 0.691 km
1655 E 4th St 1.387 km
Motel 6 Ontario 1.529 km
Motel 6 1.537 km
Days Inn Ontario Ca 1.962 km
Fairfield Inn - Ontario 3.226 km
Hotel Indigo Ontario Rancho Cucamonga 3.579 km