St. Johns Drive is not too bad however there can be trouble around the shops opposite it and on the green area opposite the church/shops.
The plus points are, the beautiful Corkagh Park is on your doorstop, the 69 bus is a minute walk away and Clondalkin village with shops and pubs is only 10 mins walk.
It's an average part of D22 -not the best nor worst. I remember one of my Clondalkin shop staff buying there and I went along with her to view a few in that area.
They all had only two bedrooms which I advised her - and anyone buying a house - not to buy.