The verdict
Airlines. For me CX always provides good service and an excellent J product. The QF flight with the business suites is also great. The problem with Qantas is the inconsistency with their product. On the HKG flights you could end up on A380, B747 or A330, all with a different product and configuration. I have become used to the 1-2-1 configuration in business and wouldn't be too impressed if I had to fly on the B747 again.
Accommodation. I was really impressed with the Airbnb accommodation we selected in Gordes, Nice and Paris. Its great to have your own space in a well appointed apartment. Couple of things to remember though. Early check in and late check out may not be available, also not possible to leave luggage after check out. The most expensive hotel, Intercontinental Marseilles, did not live up to the hype and service was definitely not 5 star.
Summer in Europe, at least in southern Europe was hot, very hot. Most days were over 30 degrees and Portugal was 40 plus. This may be OK if you are staying in a resort or on the beach but travelling around large cities on public transport visiting the sites is just too hot. Maybe next time we can spend summer in Northern Europe.