easy on the eye(s)
Attractive or aesthetically pleasing. A: "He's easy on the eyes, isn't he?" B: "Of course he is, he's a model!" This painting is so easy on the eye. It will be wonderful to wake up to every morning.
easy on the eyes
Also, easy to look at. Attractive, beautiful, as in That model is definitely easy on the eyes. [Colloquial; c. 1900]