Don't think you'll find a house on a "nicer" road anywhere in dublin for that cheap.
We were looking in cabra for quite a while earlier this year. The "nicer" part is east of Quarry Road and south of Fassaugh Road. The roughest looking bit is up by Broombridge station. My favourite road by far was Newgrange Rd - really quiet.
If you see a house you like and aren't sure about the street, go for a visit at different times - particularly weekend nights (10pm-2am). Go for a walk around at these times and see how you feel.
In the end we got a bigger house with a bigger garden on a really quiet and nice road in Rialto, so I'd suggest doing lots of research, putting in a lot of hours and not limiting your search to just one area. Plenty of value to be had out there right now - you just need to put the work in and take your time to find the right place. Best of luck.