If you're a lounge veteran, yes nothing too special. They're lounges. If you're not used to lounges they'll be good enough . Perfectly functional, acceptable lounges with a reasonable range of food offerings - representative of Singapore with a range of Malay, Indian, local Chinese and Western foods, all edible, but nothing that's got a wow factor. Also bear in mind that it's a business class lounge you'll be going to, not a first, so need to manage expectations. Whilst a few have more up to date furniture, and some have some good gimmicks - like's QF "prepare to order" (ie. "reheated to order") - or CX's noodle station - it's probably not really much worse than the most middle-top tier business class lounges I've been to (the three stand out exceptions that come to mind in my experience are TK's IST lounge and the whiskey bar at LX's ZRH lounge, and for networkwide consistency EK's lounges), but it all depends on what floats your boat.
And if you do want cooked to order food, at SIN, unlike many places around the world, airport food is relatively inexpensive, and plenty of good hawker and some semi-decent non hawker food for moderate prices, if the lounge doesn't meet your needs.