3 hotels are already in use there
Hotel hosting Ukrainian refugees faces dilemma as summer looms – The Irish Times.

The area of Rosslare Harbour is a temporary home to over 250 refugees at present across three hotels and numerous families who offered to host people.

Population Rosslare, 1200
Census 2016

250 additional people is 20 years Natural growth. Thats before abandoning the nursing home and cramming more in.