I just checked the Deportivo site there and they have on it when and were they coming to dublin.

In gringo it reads:

El Deportivo viajará el próximo martes a Dublín en vuelo chárter que partirá de Alvedro a las 11.00 horas. La llegada a la capital de la República de Irlanda está prevista a las 12.30 (hora local, una hora más en España). En Dublín, el hotel de concentración del equipo es el Berkeley Court Hotel.

Which in proper english reads:

The club will be travelling next tuesday on a chartered plane at 11am (Spanish time) arriving at 12.30 (Irish time). In Dublin they will be staying at the Berkeley Court hotel.

I would imagine they would be training at Tolka.