I can personally recommend Yellow Fish for airport transfer from Faro to Isla Canela. I have used them on several occasions and have been very pleased with the service. Several of our guests have also used them.
You can make a reservation online. They will meet you outside arrivals at the airport and are very easy to find.
They will drive you in through these secure gates into the car park at the rear of the property. You will need to press the button on the electronic key fob for the gates to open. If they fail to open you can use the pedestrian gate key (on the keys provided) to open the foot gate. You will see a black short pole with a light switch style button on it. If you press this the gates will open.