Westport, Londonderry (Derry), Portrush, Trim - Recommendations for lodging

We recently were in Trim and stayed at Highfield Guesthouse and were very satisfied: http://highfieldguesthouse.com. The room here was probably the most spacious and airy of any of the places we have stayed, thus far. It's a beautiful B&B. Everything--pubs, restaurants, etc.--that we needed was within a very short walking distance. The proprietress suggested we take the Trim Castle Riverwalk before dinner. It was a little highlight of our visit. We walked along the river and then through a field of sheep (well-marked path), past a ruined church, etc. to a pub called Recan (they only serve drinks), and then we looped back to town on another trail.

In Portrush, we stayed at Harbour Heights B&B, and again we were very satisfied: http://www.harbourheightsportrush.com. The proprietor (Tim) gave us good recommendations on a place for drinks and then dinner.

Both locations are mentioned in Rick Steves's current guidebook.

Thank you for your input! I think I have gone into overload reading all the comments on Trip Advisor regarding the B&Bs. I will take a look at the ones you have mentioned.

We stayed at the Everglades Hotel in Derry. Its a very nice hotel but out of the city center. It was booked as part of the tour we were on.