They are building the entrance to Dash Highway behind the apartment so I guess is an added bonus since you can go up to DASH from here. A U turn at the traffic light can bring you to Penchala, Dash and LDP (2 u-turns for this).

https://www.youtube.com/watch?v=sIALl2Q6y6s

Well compared to my other apartment at Damansara Perdana where DASH just passes it and no where people at Damansara Perdana could use it, then yes, i think it is a better option because you can access it easily.

I am not fond of the DASH highway but we can't do anything about it so better to make the best of it I guess. I am sure it is going to be congested but it is just a ramp up the highway for people from Mutiara Damansara and Damansara Perdana folks to access it. The super busy part of the highway is still going to be around Damansara Perdana, unfortunately which is right in front of my other apartment.

And since it is on the other side of the road, i think the DASH will not really affect the peacefulness of Mutiara Damansara that badly, maybe nearer to Damansara Perdana part i would think. Well, although there are cons, there would be pros to, e.g. easy connectivity to Subang, Shah Alam, etc (although i am not a fan of that part of town).