As a ferryman he is ok. I would prefer a more experienced one but there might not be anyone available.
I think experience is a little bit overrated, yes experience can make the difference in certain situations, but i think it is useless if the basis isn't there.
First the coach has to reach the players, he should fit. Only in this case he can deliver his philosophy of football to the players.
Benitez won the La Liga, got second in the Premier League and won the Champions League. He has got enough experience, bit it doesn't help us at all cause he doesn't fit. He tries to change things to radically without proper players, he should know better.
I would love a young coach who tries to work with Inter for at least the next five years. Someone who starts a new era and becomes a symbol. For example Dunga, I would love him here, I think he would fit, his style and everything, I liked his Brazil a lot, a solid defense but still attacking.
Of course he didn't coach a club yet but coaching a national team isn't that easy as people are trying it to make, especially the brazil team. You need qualities and dunga seems to have them, and Inter with all the south american players would be perfect for him.
And every coach starts at a young age, and a great coach is successful even at young age
But thats just an example.
All i want to say is that an experienced coach guarantees nothing. There is always a risk and you don't know beforehand.
Inter should look after someone who seems to be the right coach, who fits and will be respected by the players.