Elaine is a very nice and attentive host - she is very quick to respond, and has staff that is able to come over and attend to any issues that arise. As our flight got in earlier than the check in time, Elaine was very nice and accommodating and allowed us to go into the flat earlier than the check in time.
The flat was great for a weeks stay - the 123 bus got us to most tourist locations we wanted to visit (wasn't quite walking distance to major attractions such as the Guinness Factory), and was quiet enough while being close to the city center. However one major complaint is the mattress is EXTREMELY uncomfortable. As we were young with good backs it was uncomfortable but we were able to manage, however I cannot see how an older person would be able to sleep there at all. It is hard on the sides and sags down drastically in the middle. I ended up sleeping on the floor on a small "mattress" (one of those soft chairs that turns into a sleeping pad more like) which was way more comfortable than the bed. My friend suffered through the bed for the whole week.
Besides that, if a mattress is not something that is important to you, I definitely recommend Elaine's flat. She is very quick to respond, and handles all issues that arise even if they are minor ones.