We stayed in Kate's place for 4 nights (added an additional night during our stay) and could easily have done a week more. The apartment is everything we could hope for. The place is large with 3 good bedrooms (one box), and one ensuite. TV in sitting room and one of the bedrooms. The balcony overlooking the river was incredible. Clean and peaceful.
The apartment had everything required for an extended stay if one so wished.
Accessing the apartment is up a flight of stairs (maybe 20 steps?).
Location is excellent - literally 5 mins walk from the center of the town, so everything is close by.
We weren't sure about staying in Ballina but we were hugely impressed with so much to do in the area.
Would definitely go back and stay in Kate's place without hestitation.