I take the ORD-WAW/WAW-ORD flight several times a year and have been never had a single reason to complain. Business Class service and accommodation is excellent and the value for money proposition is unbeatable at about 30% of what Lufthansa would charge to German destinations from ORD. Compared to some other airlines, the C class offering is more basic but as a frequent traveler who only really cares about comfortable lie-flat seats and a solid helping of food and drinks, it is absolutely all I need. No frills but predictably good every time. Some of the older 787-8s are starting to show their age a bit but the new 787-9s that have recently started operating on this route cannot be faulted. WAW airport is easy to navigate and has a nice Star Gold lounge area with a good and solid quality selection of food and drinks. Airport staff is efficient and courteous and doesn't bother with American style fake smiles, which is refreshing. Happy to recommend and use again and again.