Residence Inn by Marriott Ontario Airport

Several reviewers noted severe cleanliness problems, including urine stains, moldy odors, and unclean bathrooms, indicating the rooms often do not meet Marriott cleanliness expectations.

Source: 6 of 8 reviews • Confidence: high (explicit mention)

• Common issues: urine stains, mold smell, unclean bathrooms

Multiple customers experienced delayed room readiness, with some having to wait until 6 p.m. for a room that was booked for 3 p.m., and others facing room switches due to noise or maintenance issues.

Source: 4 of 8 reviews • Confidence: medium-high (recurring theme)

• Check-in delays reported
• Room switches due to noise or maintenance

Guests frequently reported malfunctioning plumbing, broken lighting, stained towels, dirty ironing boards, and outdated fixtures, suggesting amenities are often below expected quality.

Source: 5 of 8 reviews • Confidence: high (explicit mention)

• Broken toilets, non-functional lighting, stained towels

While some staff members, like Angie and Andre, were praised for exceptional assistance, many guests felt the front desk and maintenance were slow or unresponsive to issues, contributing to an overall negative experience.

Source: 3 of 8 reviews • Confidence: medium (mixed evidence)

• Positive interactions noted but overall service lagging

One review highlighted security lapses, noting that grown men let teenage girls through security gates unchecked, and another mentioned suspicious activity in the back parking lot late at night.

Source: 2 of 8 reviews • Confidence: low (limited evidence)

• Security gate breaches reported
• Shady activity in parking lot