I also flew Luthansa Airlines alot .. when i traveled around Europe.. but I’ll have to say .. that customer service at the passenger line .. whether at the airport or the offices.. were good experiences for me. I love the fact that the seating had a little more space in between than other airlines.. and in flight food was good.. when you flew business class.
I hear they are still running the Chef program at Lufthansa. I love that they provide cheese platter throughout your meals, including fresh fruit platter.
A quick flight from Heathrow to Frankfrut economy class gets you this sandwich only of cheese though but they also have a banana and chocolate flavored muesli bar.