If Rossini’s is back for the Executive Breakfast then SGS. No lounge but it’s better than a lounge as you can get coffees etc at The Library and proper drinks in the hotel bar but evening lounge won’t make a meal.
Avoid Regis unless you want to try it on an award stay. Usually it’s much more expensive than the others. I wouldn’t pay their cash prices though because their breakfast is quite poor and their happy hour wasn’t so great either.