I have advertised on Daft for two properties, one in Dublin and the other quite close to Dublin. I found it okay, quite slow to get people, but the great thing is you can put pictures up. This works best. Once I put pictures up there was much more interest. Also, make sure that you refresh your ad everyday to ensure it stays near the top of the list.
I also advertised in the Herald, but found a lot of weirdos ringing me up. I ended up not answering my phone for two weeks and leaving it on message minder. One person rang literally about 35 times! If you are going down that route, Thursday and Friday are probably the best days to ensure it's in.