I've stayed here a half-dozen times since the new M Club opened in January.
The self-serve coffee in the M Club lounge is now illy. I don't know when this changed, but it has changed. Also, the coffee machine now works. Before, it always broke down. The machine also now has a skim milk option for cappuccinos and lattes.
Self-serve wine prices have increased with some glasses around $15 and $18.
You can also order restaurant food and have it delivered to the lounge. I don't remember that being an option before. Now, they even have menus on most of the tables. Cheese at night has been downgraded from a two or three variety gourmet cheese board to standard concierge club yellow/orange cheese cubes.
Overall, I share other sentiments that this is one of the better domestic Marriott lounges. It would be nice if they had at least had some champagne or more premium wine if they're going to sell it at such a steep price. I don't understand why the hotel charges so much for wine when there are so many bars and restaurants in Washington with better wine at better prices.
Room service has been downgraded to the newer Marriott Bites concept. You're still charged a room service fee and the food prices are about the same as traditional room service, but the food comes delivered in plastic containers in a paper bag with plastic cutlery. The Cesar salad with grilled chicken is good, though the parmesan cheese is grated and not shaved.
Upgrades are difficult here. Even just getting a slightly bigger room. Staff are generally pleasant, especially in the lounge. The lounge attendants take a lot of pride in their work. I've seen the same ladies for months now. They're very cordial. Not Singapore or Hong Kong service, but much better than many other properties. No newspaper delivery, but newspapers -- Wall Street Journal and The Washington Post -- were available every day in the M Club and in the lobby.
My room had a desk, but the desk was built into the new long hutch and cabinets. The TV is great, in my opinion. Massive. Like 55 inches or more. Unfortunately it doesn't swivel for the chair.
No water is provided in rooms, which is kind of annoying because the M Club doesn't have bottled water. Only a fountain with three taps: sparkling chilled, chilled still and non-chilled still. You can however bottle it yourself in a small glass jug.