Cathal's place was great. It's very close to everything, very clean, and comfortably.
The noise from the street is definitely audible, but not too bad. Also one room is very light all the time, so if that bothers you, bring an eye mask.
Other than that, it was an excellent experience. He left us maps, made sure someone was there to let us in and show us around and answer questions, and was very helpful and easy to reach while we were there.