Free

No, check in starts at 3 P.M., but you can leave your luggage there

I can do it.

A coin laundry is available at the hotel. Recommended for long-term guests. https://www.apahotel.com/other/service/

1stay(15:00-11:00) 1,200yen(tax included) and otherwise 250yen(tax included) per 30min. for reference https://www.apahotel.com/hotel/chugoku/06_hiroshima-ekimae-ohashi/pricelist/

Check in from 3 o'clock. Check out time is 11 o'clock. Grilled Hiroshima roasted on the first floor. Hiroshima ramen? It is delicious like a tsukemen too!

There are trouser presses for men, but I don't think there was an ordinary iron.

It's a one-meter taxi from Hiroshima Station to the hotel. You can get a taxi from the hotel room to the front desk to call in front of the hotel.