I'd suggest to check the AEATO
(shodothugs) or the Muteki Dojo
(Tissier - Endo). I've always heard good things about Antonio Quero, Muteki dojo aikido instructor.
As from your post I can't be sure about if your friend is interested in Aikido only, at Muteki there is also other martial arts/combat sports available like Kickboxing, Muay Thai, Jits...