Brook Lodge is lovely but my favourite of any place I've been, inside and outside of Ireland, is The Heritage at Killenard.
Golf: championship course or par 3
Bowling: indoor green
Gym: as well equipped as I need it to be

Spa: beautiful, highly recommend the Heritage Spa Experience, €60 for 3 hours
Walking: as much as you like around the track
Eating:
Arlington Room, upmarket hotel in restaurant
Slieve Bloom, bar food, nice but not quite substantial enough for dinner
Cocktail bar, afternoon tea - haven't tried it yet
Greens Restaurant, in the golf club, really nice food at good prices (imho!)
Golf Clubhouse bar, smaller menu than Greens with a few snacky things too,
Spike, coffee shop, handy for a light lunch
Pub, carvery lunch, not sure about evenings
Sol Oriens, Italian restaurant with decent well-priced food.
They do a "Heritage Break" for €170 per person sharing which is 1 night B&B & dinner in one of the restaurants.
I have no connection with The Heritage (but I can dream, can't I?

)