We recently spent 3 nights at the Trinity Capital. Very convenient location - 5-10 minute walk to Temple Bar, Grafton Street; and easy access to the main gate of Trinity College, which become our primary reference point for navigating the city. Comfortable rooms - we didn't have air conditioning but the front desk sent up a fan that solved that problem. And when my mom lost a filling, Stephen pointed us in right direction to a dentist that worked weekends. All in all, it was a very welcoming hotel to call home for a couple of days.
As an aside, if you ever need emergency dental work, Smiles Dental (yes, really) was extremely accommodating.