Very near to the main shopping street, main attractions and tram stops, a lot of eateries and convenient stores nearby. Staff were nice, place was clean, kitchen and chat area are spacious.
There are nearly 10 shower rooms on 4th Floor, but you may assign the bed in 3/F-6/F. But it never happened of no shower rooms available (good).
However, you have to bring your own towels or you can rent from them about 150-200 yen (forgot).
Overall, it was a happy stay in Santiago and I definitely recommend you to stay in Santiago if you would choose a hostel in Hiroshima, as it is high scores in every aspects!