My husband and I traveled using American Airlines points business class to Spain. American put us on their partner Iberia, which I had never heard of, what a nice surprise.
LAX to Madrid to Barcelona, you do have to change planes
Seats laid flat and the service and food was fantastic.
They do not have first class so their Business Class is just like First Class.
Depending on the plane you are on the seats can be staggered and behind each other not together so sit in middle if you are a couple, they call those seats the Honeymoon seats!