Usability

Website is very convenient nowadays when people want to search useful things online. We could compare the rate of the hotel accommodation and price of the air plane ticket, and then choose the best choice online. 

Taking Castelknock Hotel for instance, the homepage is very structured, every department information online is in detail. They provide a flashing show of the accommodation, restaurant, swimming pool, golf area, etc. However, they don't update the playing approach of the video as I couldn't watch the video online. The hotel also dosen't provide the room rate on the homepage. Sometimes people want to see the room rate in detail rather than require for it, although the room rate is fluctuate, especially during the peak season and off season. 

Comparing to the D Hotel in Drogheda, we could clearly know the room rate from the homepage, but the pictures to the restaurant that the hotel provide are not that good to show their characteristics and obviously people could not see the advantage of the hotel and also don't know if people themselves could get benefit from the hotel or not.
As Internet is necessary for us nowadays, organization industries should have their homepage well structured and friendly for people to look at and search. The homepage of a company could be seen as a image of the organization, therefore the first glance and the usefulness is very important when building the homepage.