We stayed in a conceirge suite at the DL hotel Thanksgiving week.
Yes, there was nightly turn-down service, priority check-in service, and wine and cheese as josierac mentioned.....and, to answer your question, yes there is a separate lounge, with a private glass elevator from the outside of the building. My kids thought that was *cool*!!!!
Also...
We had *continental* breakfast daily, which included an assortment of pastries, bagels, fruits, cereals, Krispie Kreme donuts, juices, coffee, tea, hot chocolate (with unlimited marshmellows- VERY important to the kids

). We found the breakfast to be more than adequate for our family of 5......
Open access to drinks during the day - waters, juices and sodas...which we stocked up on daily and saved lots of $$$$ by NOT purchasing drinks in the parks....
Cookies, crackers, nuts, pretzels (my kids would make *trail mix*...), cheeses, chips and salsa, WINE (even *to go* in LARGE plastic cups....

....but you can't take it on the monorail, so you have to *drink up* before you get on)
Drinks/snacks for viewing the fireworks out the big sliding-glass-door-windows that they opened up.....if you want to watch the fireworks from the lounge, try to get there in time for a window-side seat....
The concierge helped us with dinner reservations for us in several occasions.....and we found the staff to be very helpful overall. We were able to take advantage of the special 4-nights-for-the-price-of-3 deal this fall...and we felt that we got a fair deal for what we paid for the room and services we received.