we only stayed one night at Karl's place in howth, but we wish we could have stayed longer. the location is perfect, the apartment was exactly as pictured, with new furniture, a well stocked kitchen and comfortable beds. the apartment is also immaculately clean. the restaurant downstairs is closed on Mondays, so we didn't have an opportunity to eat there.
Karl was very easy to communicate with and attentive to our needs, even allowing us to check out an hour late because my husband was sick.
Howth is a really great place to stay, with lots to do, many great restaurants and is well connected.