THE Hotel Merrion, the joint venture between Mr Martin Naughton, Mr Lochlann Quinn and the Hastings Hotel Group, has appointed Mr Peter McCann as general manager. Mr McCann (34) has been general manager of the Sheen Falls Lodge in Kenmare for the past year. Before that, he spent five years with the Conrad Hotel in Dublin. The hotel entails an investment of £25 million involving the restoration of four listed Georgian buildings opposite Government buildings in Merrion Street, Dublin 2.