I've chosen KLM for their direct route from Singapore to Amsterdam and their good reputation.
Check-in in Singapore was fast, quick and easy, but NOT friendly. That's really a shame.
Who positively stand out for me was the lady who was reminding everyone to get their passports and boarding passes ready just before going through security and entering the plane (security is directly at the gate). She was amazing, great spirit, energy and full of positivity!
I was seated at the window which has both advantages and disadvantages. I was sitting next to an older couple and always had to climb above the middle person when I needed to get up. Quite literally climbing as there isn't much space. Thankfully (or not) I have long legs and am flexible.
The stewards and stewardesses were nice but didn't seem to be overly excited. I've experienced better vibes and service on a plane.
I appreciated that they filled my refillable bottle with water. Also, I feel such behavior should be encouraged on planes. Way too much waste!