O'Shea's Merchant is located on Merchant's Quay, right along the River Liffey in Dublin.  It is a lively pub with live traditional Irish music and dancing 7 nights a week.  There are 2 venues in the pub: a traditional music pub, and a restaurant.  On the restaurant side, they often have a late-night disco featuring a country or dance band.

O'Shea's Merchant is not the same as O'Shea's Hotel, which is on Gardiner Street near the financial district.  The ownership is the same, but the atmosphere is completely different.