First of all, don't buy this car expecting a sports car. It's not designed to take corners fast and hug curves in the road. It was designed to be a cruiser, get it out at 75-90 mph (120-145km/h) and relax; that's what it's made for.
Acceleration is good, however with rear wheel drive, you will experience slight loss of traction on slippery days if you give it too much gas.
Steering is smooth and solid, not sporty.
Cabin layout is great. Elegant yet user-friendly at the same time.
Air conditioning cannot keep up with 5 people in the car on a very hot day.
Don't let the price fool you, I bought the car for 2/3 the price of my 2000 Toyota Camry, and I love the Benz ten times as much.
It's a Mercedes-Benz, expensive to maintain, only drinks premium fuel, but is also the safest car on the road. If you can look past the few negatives you will find a vehicle containing luxury, elegance, safety, power, simplicity, all in a refined package.
By the way - this car takes about 2 weeks to fully appreciate, don't expect to fall in love with the feel the second you step inside, it comes with time.