Dublin Hotels

We are going to be flying all day so I want to book a hotel for 2 days when we arrive in Dublin. After that it will be bed and breakfasts for the rest of the trip. I wanted to stay at The Clarence but for some reason they only allow checkouts on the day we arrive.

So far I have it narrowed down to a bunch of hotels:

• The Morgan (http://www.themorgan.com) this hotel is located in the Temple Bar district but is supposed to be loud if we get a suite in the front of the hotel. Not sure if we need noise after flying all night.
  
• Clontarf Castle (http://www.clontarfcastle.ie) this hotel looks cool but it is far away from everything.
• Number 31 (http://www.number31.ie/welcome.html) highly recommended, a B&B hotel.
  
• The Dylan (http://www.dylan.ie) EXPENSIVE! I'm dreaming.
  

In the end I am looking for somewhere quiet but once I get there I will probably want something right smack in the middle of everything that is Dublin. My finger is hovering over the Book Now button at the Morgan website.