Letters from Kerry, Ireland, cannot find address

Hello Everyone,

I have a few old letters from the 1950's that some relatives sent to the states.

The address on the letters is 9 Castlerosse Lee, Killarney, Co Kerry

The only results I get when I search for "Castlerosse" is "The Castlerosse Hotel" which was built around 1960.

Could this be the same property before the hotel was built?

Thanks for any info.

Sean O'Connor