I am looking at suggestions for transportation to Madrid Airport. There are 4 of us with luggage. Our plane leaves at 9:35 a.m. are we are staying in an apartment (not a hotel) relatively close to the Atocha train station. Obviously it would be easier to just take a cab or transfer service to the airport and it would probably be easier to prebook since there are 4 of us rather than scrambling to find something early in the morning on the day we leave.
Has anyone had experience with a specific company that is reputable.