I've really enjoyed it. It's a great balance of being comfortable for daily use and fun to drive when I'm not. It feels way more alive compared to my Fusion demo and is miles more comfortable than the Focus RS I had before the Fusion.
Only problem I've had with it outside of many recalls is a dip in revs when the A/C compressor kicks on. There's fixes for it, but it doesn't bother me enough to do them. Factory brakes lasted me 50k, tires last about 25k. It's awesome with snow tires in the winter too. Hasn't missed a beat in the 7 years I've had it.
Space is fine inside considering it's a compact. I can barely fit two suitcases in the hatch, but I can. A carseat requires the seat to be pulled up if you go with the base trim, but they are all-day comfortable. The optional Recaros seems a bit thinner and give rear seats more leg room, but they are TIGHT if you're fat like me. Great seats when you're pushing the car though.
Only real complaint is the small fuel tank, but that's a minor one.
Happy to answer any other questions.