There is an overflow lounge next to the main lounge area if you want somewhere quieter. Because so many airlines use the lounge it has always been quite busy in my experience, and isn't terribly relaxing as a result. The lounge next door is not so clearly signed but it is open to you (it's run by the same outfit) and has the same fairly restricted food offering and not overly fast wifi. On the big work table at the back of the main lounge there are some hidden LAN points which are a bit faster, if you have your cable with you. I'm not a big fan personally, and frankly it is greatly outclassed by TK's / Star Alliance offering at IST.