The Long Room, which opened on 16th May 1738, occupied the site of the present Clock House. It was a two-storey building which extended to the centre of the road. It was built by Colonel Anthony Jephson of Mallow Castle as a place of public entertainment for visitors to the Spa. Balls and Public Breakfasts were held here and it was frequented by the Rakes of Mallow. The "Rakes" were wild men who engaged themselves liberally in drinking, gambling and, where possible, hunting, particularly during the Spa Years.

Living short but merry lives, Going where the devil drives, Having sweethearts, but no wives, Live the Rakes of Mallow.

It was said to compare favourably with other famous Spas such as Bath, Tunbridge Wells and Scarborough etc. Mr. Murt Murphy took the Long Room from Colonel Jephson of Mallow and he provided teas, coffee, chocolate and other necessary things along with providing some of the best Dublin newspapers twice a week. When the Spa went out of fashion, not being able to compete with Bath, as lodgings etc. became too expensive, The Long Room was converted to Mallow's first Primary School for Boys. Canon Sheehan and William O'Brien were pupils. It was demolished c. 1850 as it caused an obstruction, extending as it did so far out onto the road, when the Spa road was being developed.