As it happens, I don't know where it is. Cork is a large county. That house must be one of the most opulent in the country. Flatley must be minted if he can afford to take that much of a bath on a property and have no financial worries. Who knew Irish dancing could make you rich! Flatley was quite ill a few years' ago with a mystery infection. Fortunately he seems to have fully recovered.
When I was at primary school, Irish dancing was considered the most uncool thing ever. Our teacher in second class (the equivalent of second grade in the US) had us put in a play with Irish dancing in it and the watching parents burst out laughing! Flatley made it cool, with Riverdance.