As travel books go, this is not great. Fletcher can be mildly amusing at times, but he dwells too much on minor historical connections -- the birthplaces of Chester Arthur's ancestors, writers of hymns, and military leaders of colonial India -- and ruined and/or revamped manor houses. He's better when he focuses on the present -- his descriptions of road bowling, Lambeg drumming, and eel fishing are interesting -- but he doesn't compare to Tony Hawks, whose "Round Ireland with a Fridge" is my standard for Irish travel books.
I give Fletcher a lot of credit, though, for aspiring to write a non-fiction book about Northern Ireland that doesn't focus on the Troubles. I don't know if he quite achieves his goal -- there are a number of instances where he describes a lovely village and then proceeds to say something like, "but even a charming place like this hasn't been untouched by violence" and goes on to describe a horrible bombing and I'm not sure everyone would appreciate his "it looked just like any other part of the United Kingdom" comments -- but I think his efforts go a long way toward changing outside perceptions of NI.