It's certainly a refreshing show, it's well set in the period in spite of occasional inaccuracy. It's about a time when air travel was glamorous and something that gave pleasure - and one actually managed to fit in the seats, there were knives and forks and china, and the food was actually good. But people smoked, it was not 100% perfect.
I did a lot of mileage on Pan Am, from way back in the time of the Globemasters and DC-6s and I was on one of the first 707 flights from Idlewild (that was what NY JFK was called then) to London. The first episode reminded me a lot of that day and took me right back to it. It's definitely worth watching. Especially if you are over 50 - or more