Flight was adequate & efficient, and lounge was good.
However, call center knowledge and efficiency was patchy. I was traveling on a Star alliance round-the-world ticket, and had to make several date changes to my ticket. The LH call center you get when calling from Europe (in South Africa) had no idea how to handle this and couldn't even give me a correct number for someone who could, whereas the call centers for Asia (Shanghai) and the US are fully on top of it. In the end it took almost two hours, partly on an international non-toll-free call to Germany (in fairness, the reservations desk in Germany is very competent and efficient), to make a simple date change.
As Lufthansa is the round-the-world specialist for the Star Alliance (they are the airline which will issue the ticket if you book through the Star Alliance website), they should ensure that all their call centers are competent to handle these tickets.