Hi.
I flew with TAP last summer Madrid-Lisbon-Madrid. I have to say, i was very impressed by the airline. The food was much more and of a better quality than i expected on a 1 hour flight. The airbus A-319s are really quite new, and have very comfortable leather seats. The cabin is very spacious too. Only problem i found was that as i was sitting close to the rear galley, we encountered some turbulance on takeoff, and the fittings behind me creaked an AWFUL lot. It was really quite annoying, although it only lasted a few minutes. If you can, it would probably be best to sit closer to the middle of the plane where i imagine it will be a bit quieter.
Hope this helps.
Alex