Hi
jrkmsp!
I visited Nanjing last year. NKG is a large and very modern airport. That said, it is not on the same massive scale as PEK, PVG or SZX.
International Departure area...
I believe China Eastern has a dedicated lounge / domestic lounge, which I have not visited, but I did visit the International Lounge, which is a shared lounge used by Dragonair (Now Cathay Dragon) and other airlines.
It is a decent, if unexceptional, lounge with fairly basic, mainly Chinese-style, F&B.
Comfortable, spacious seating.
No guesses when I was there...
The city itself is quite spread out, and many parts of the city are quite scenic.
I only visited for a few days, and just caught a glimpse of the city, but apart from the history and other attractions, there is very good food to be had.
Enjoy your trip!