I highly recommend a private transfer to and from the airport.
They are waiting for you when you come out of the airport.
You will have a comfortable, direct transfer with no stops (unless you want one)
You will check in privately (not with a large group)
You will check out later than with a bus and go directly to the airport (no stops)
A package/included transfer can take double the time or more,sa may make many stops and you may check in with a large group. You will also check out earlier than with a private transfer.
There are a number of reputable companies. As one suggestion, I use Agi Tours.com. They have well maintained vehicles and Englsh speaking drivers. I have used them for years.They have never let me down.
Here is the van that Agi Tours sent for my daughter in December.