It's subjective and you will get a different response depending on who you ask. However my two cents is that it will look good enough. It won't look quite as good as 1080p on a 1080p screen but the laptops higher pixel density means it will look better on a 15" laptop than a 27" desktop monitor for example.
If your asking because you want to get better gaming performance by dropping the resolution to 1080p then in many modern games you can set the resolution to 1440p and adjust the internal render resolution to reduce the demands on the hardware. That's a better solution than changing the resolution as it means things like the HUD and are rendered at the normal resolution.