A family-run hotel. Cassidys Hotel: a gem in the heart of it all. Cassidys Hotel is located at the top of O'Connell Street, opposite the Gate theatre, in 3 Georgian redbrick town houses which provided a backdrop to the work of famous Irish writers such a O'Casey, Shaw and Joyce. Making the most of the elegant proportions and classic plasterwork, the whole building has been painstakingly refurbished to give 21st-century comfort in the granduer of another age.