Too many negatives outweigh the positives.
Unless you HAVE to stay AT the airport, look elsewhere. 
First of all, I will start out this review by saying I’m not a big fan of LA. From a business prospective, It’s noisy, congested and expensive, but my job takes me all over the US and I deal with it.
I stayed in room 1502, a King room overlooking the airport. Apparently my Gold Marriott rewards status didn’t qualify me for a better location in an empty hotel. Despite getting in at 2:00am I should have changed rooms.
I don’t see why you would stay here. Granted it’s a “Marriott”, but an old one. I have to think in this price range there are better possibilities.
PRO's: 
• Very good beds and excellent pillows. Nice down duvet.
• Updated décor throughout room and hotel, though not “upscale”
• LG 32” flat screen TV
• Solid surface counters with tile floors in bathroom. 
• room was clean
• Small seating area with table
• Has small fridge
CON’s:
• EXPENSIVE. I just stayed at the JW Marriott last week and while expensive, I felt I received a good value for my dollar. Not so here. Continental breakfast is $15+, eggs/bacon $25
• Moderate to severe noise. Mostly planes as you can see the runway from the rooms, but there is a trucking terminal across the street which made as much noise as the planes. Fire station is just down the road. 
• Painfully slow valet. I ended up self parking which STILL costs $28. I believe valet was $34
• No Microwave
• $10 Fee for wireless (although mine was comped)
• Construction on site, some areas roped off, difficult to park, walk into hotel.
• Older properties have smaller rooms than newer properties. This one is no exception.
• Slow internet
WORK AREA
• The work desk was good size, with a mediocre chair. Only 2 outlets for electronics 
Breakfast/Food
One pleasant surprise was the concierge lounge on the 16th floor which was included with my room. It was large and well stocked and had an excellent continental breakfast and some hot choices such as prefab scrambled eggs and bacon.
SCORE: This is a subpar property for the money. I would give this property an 80/100 overall and an 60/100 for value. Look elsewhere and get as FAR away from the airport as you can. It is very busy virtually ALL the time. The FedEx terminal is at this end of the runway and they run when the commercial jets are done for the night.