Have not flown them since 2001, I used to fly with them to Malabo.
One flight I had my hand baggage confiscated at the gate (I had two pieces which was allowed as I was travelling BC) and had my bags returned to me 3 months later - EMPTY.
My next trip - also in BC, the Captain came out of the cockpit - lit up a (on a non smoking flight), when I complained I was told to shut up.
At that time I considered Spanair to be exceedingly unprofessional and have refused to fly them since. Have no idea whether they have changed nor do I want to find out. Service was nothing to write home about either.