If it's one of those purpose-built houses at the south end, they're very nice - we went there about 8 years ago.There's a few good pubs in Lahinch but the music was usually of the 'hired-in band' variety (in O'Looney's, the Nineteenth, and the hotel on the corner at the south end of the main street). More traditional pubs are Frawley's, and, particularly, the one a few doors up from the Nineteenth, only opening weekends and by request. The birthday bash I had in there was memorable to say the least!
There was a traditional session in Ennistymon (and you can walk there from Lahinch). Unfortunately I can't remember the name of the pub - it's in the main street one pub down on the left from the Lahinch road. My partner Maggie and I had a fine time in that session - they even let me play bass guitar!
Of course eight years is a long time and everything might have changed, but somehow I doubt it. The people there were wonderful, and writing this has brought back some very happy memories. I hope that you all have a great time and let us know about it when you're holiday's over.
Les