Very professional
It is one of the world's top 3 aviation schools.
AC maintained to the highest standards, FI I know are super professional, accommodation is expensive but very convenient, you will be able to focus on flying.
Weather in Jerez is amazing and you can expect no cancelation nor delays.
Expensive but top quality.
I fly often in Jerez, and I know their staff and some students.
If you can afford it, go for it.