I live in Riverwood, have done for the past 6 years or so. We looked at Mulberry when investigating the area in 2000, it can only have gotten less attractive given the proximity of the M50. And the road outsdie is basically the main access to Riverwood / Coolmine area, so uit get very busy.Not for everyone.
Riverwood itself is probably a better bet - it's closer to amenities, train at Coolmine is no more than say 20 mins from the furthest part of Riverwood, also has access to shops / doctor / pharmacy / pub near by. I can imagine that the traffic noise near Mulberry must be a factor when preople are living there. You would get a 3 bed in Riverwood for the low 500k mark at the moment.