I won't mention the mossies to Sue!!! We do have tropical strength repellent left over from Thailand though!
We are just waiting in the departure lounge now, so I will let you know our experience.
With some further detail on my email to you Malcolm and for information to others.
Actually all went very smoothly with Centauro.
It was easy to find their shuttle pick up point, directly outside the terminal building in Palma airport.
One shuttle was just leaving as we arrived, but another came within 5 minutes.
Their depot is off airport, but it took less than 5 minutes get there.
You take a ticket from a dispenser to confirm your place in the queue, but there were only 4 in front of us and we were leaving in our car in less than 10 minutes.
We received a free upgrade, as they apparently only had a few diesels - very strange, but most welcome.
In summary, so far anyway, it has been a very satisfactory experience and at a 60% discount v Hertz, Sixt..etc I am even happier.