Great central location, lovely room, good service.
Like every other sentient being with ten functional fingers, a network connection, and too much time on my hands, I choose hotels through price-aggregator web sites. We knew we wanted to take a no-frills long weekend getaway in LA, and the best deal was the DoubleTree Hilton Downtown. So I pounced.
Then I started reading reviews on this site and Yelp. (Which should, by the way, be called Gulp. Because no web site will harsh your post-purchase Happy the way Yelp will.) By the time I was finished reading one-star reviews, I semi-expected to arrive, have my car stolen, be chained to a wall by an ash-covered hag, beaten about the head and shoulders with mops that had never actually touched a floor, harangued by the help, and offered a plateful of pure food poisoning. I've seen Turkish prisons described more generously than this hotel by SOME reviewers.
Thankfully, those reviews proved to be creamy, steamy piles of bovine dung.
From check-in with warm cookies to being assigned a room high on the recently remodeled 18th floor to check-out, we were delighted by the hotel and the service. Was it the Ritz Carlton? Probably not. (I wouldn't know, because I would rather spend thousands of dollars on food and wine and clothing than a hotel.) But it was lovely. The rooms were quiet. The walls are thick enough. The bed was covered in down comforters with impossibly fluffy pillows. We only spent time in the room to sleep--so for our purposes, it was just fine. (Another visitor noted the height of the bathroom door handles is a bit weird; s/he was right. And the door fit a bit too tightly, but that was a problem easily avoided after the first time. If you have to force it closed...don't.)
Also, the location! We're suckers for sushi. Being at the northerly tip of Little Tokyo? Perfection. You're literally steps from dozens of authentic Japanese eateries and shops, from Izakaya to Udon/Soba/Ramen places to top-notch sushi. More interested in shopping? Then you're just a few long blocks (take the car, you'll need it to bring back your haul) from the Fashion District and Wholesale District. More in a Museum-y mood? There's the Geffen within walking distance. Also: The Bradbury building. Just a few blocks away. 
And for drinks and atmosphere only 1.5 blocks from the hotel, you've got The Edison. Drink all night and walk back. Priceless.
Hollywood's just a few miles up the road, Santa Monica also convenient. 
We will definitely stay here again.
My advice: Once you've booked, stay away from Gulp. Also, take one-star reviews of ANY place with a 20-lb. block of salt.