The narrator says, of Dr. Jekyll, after his dinner party,

he now sat on the opposite side of the fire—a large, well-made, smooth-faced man of fifty, with something of a slyish cast perhaps, but every mark of capacity and kindness—you could see by his looks that he cherished for Mr. Utterson a sincere and warm affection.

Thus, the doctor is described as being relatively attractive, though perhaps providing evidence of the ability to be somewhat deceptive or even a bit, playfully wicked ("slyish"), though it is clear that he is a kind and good person overall. Further, he clearly seems to care for Mr. Utterson, his lawyer and old friend. When Utterson brings up the subject of the doctor's will, "A close observer might have gathered that the topic was distasteful; but the doctor carried it off gaily." Here, again, we have some evidence that Jekyll can be a little duplicitous. He does not want to discuss his will, and he would rather not even have it brought up, but he continues to behave in a cheerful and easy manner that would fool all but the most discerning observer. When Utterson presses the issue, "The large handsome face of Dr. Jekyll grew pale to the very lips, and there came a blackness about his eyes." Yes, so it is possible for the doctor to become disconcerted and upset, and the change is visible in his countenance.

Here are three quotes about Jekyll:

"He was wild when he was young" from the end of the "Search for Mr. Hyde" chapter.

And later, in beginning the "Dr. Jeckyll was quite at ease" chapter:

"a large, well-made, smooth-faced man of fifty, with something of a slyish cast perhaps, but every mark of capacity and kindnes"

And a few lines later his face is described as "large and handsome"