I stayed at Chateau Marmont for 7 days while in Los Angeles for work. I could probably write a book about my experience there but for your sake, I'm going to try and some it up in a few lines here.
I partied a little bit. Hit the pool (which is temp. regulated 24 hours a day). Had breakfast, lunch, and dinner, and stayed up partying in my room with some celebs who crashed the party and starting telling their "Chateau stories" (one of whom's involved watching Hunter Thompson put his fist through a window in the room we were staying in (Room 69) while tripping on Acid). Basically if you're at all into Rock and Roll and Hollywood legend, there is no other place in the country to stay.
That being said-
That's not WHY you stay there, and I doubt that is everyones experience, nor do I think that everyone would enjoy that. Chateau is a great mix of old charm and contemporary amenities. For example there's a pool, but not a super luxurious pool/hot tub with state of the art everything. It's a nice little pool where people keep to themselves sip drinks, get a tan, and relax. There's no spa, but you can get a massage in the room. You can get just about anything you need delivered to your room. In fact, you could cook a thanksgiving dinner in our room. When you're there, it's easy to get sucked in and not want to leave, it's a hotel built to seclude it's guests from the outside world. Anyone complaining about the service just doesn't get it, if you ask for something you get it, other than that, they are trained to leave you alone. There are guests who live in the hotel for months at a time, and if you're lucky enough to stay there for a few days, the staff treat as one of them.
The food was amazing. I had three meals a day there for a week, my favorite was the Spaghetti Bolognese. I have no complaints at all. Tea was especially amazing. (only con obviously is the price)
I had an amazing experience at Chateau Marmont. If you're in LA for work or just want to escape for a little, you can really sink in and relax here.
PS- If you're scared the few people that are partying will keep you up at night? Don't be. The place is built to survive earth quakes (literally), You can't hear a single thing in the neighboring rooms.