The general opinion? Difficult to say. Most polls show that his reign is being approved.
My reflections? Poor King Felipe!! Against all odds he has succeeded. Since his accession to the throne he had to deal with the crisis of the last years of his father's reign. Then he had to face the territorial problem, the political instability and a Government that, if not openly hostile, it is not friendly to the monarchy and the King.
But, as far as we have the political class we have, he has nothing to be afraid of. When a Spaniard think about the options for President of the Republic..., we'd better keep what we have.