Unacceptable customer service
I had high expectations for the Marriott, after readying many reviews. The rooms I had booked, (2 doubles interconnecting) were clean modern and of good standard, the pool area was small but nice atmosphere with friendly staff very busy on the weekend. During our stay it was my son’s 11th birthday, after informing the reception staff at the front desk they made a lovely gesture of a wakeup call with all his favourite treats, a really lovely surprise for him. We had some trouble with very noisy neighbours on the Friday and Saturday nights from 11pm until 2am to 3am, I noted that the weekend hotel clientele were young and out to party, the hotel bar during the weekend was very popular and busy. 
My own experience is tainted by the exceptionally bad rude staff member and customer service, on check out. We had issues with incorrect charges on the checkout invoice. I discussed these with the receptionist but charges had not been refunded as I was promised over 2 weeks later.
I booked 2 rooms for 2 adults & 3 children with breakfast included. I was overcharged by $400 for the 2 rooms. At check in or at the restaurant it was not explained that there was a limit to our breakfast spends (our rate included breakfast). However we had a breakfast buffet each day for 2 adults & 3 children there were charges then added for different amounts daily, even though breakfast was included. How can there be different charges although we had the same breakfast daily? I contacted the Marriott help desk on the 7th of September 2012; I am still waiting for a response from them 6 weeks later!! Not enough good Marriott. 
Luckily I booked our stay with Booking.Com they have been fantastic, with their intervention I got most of my money back. 
I would not stay at this hotel as it is not in a great location in LA, unless you are visiting the Staples Centre for one night only.