How to go to the hotel from the airport?
I can't find in your website.
If you Google Boutique Khronos Barcelona, their website is the top result. Taxi direct from airport for four people (with one large suitcase each) in December 2016 was 40 Euro. We just gave the address to the driver, and he took us to the door. When you get to the building, Khronos is on the first floor (European), 2nd floor (American), around the landing. If you have large bags, I would advise leaving one person with luggage in the lobby and another going to check in. The staff was great about not letting us touch our luggage getting it to the room or back downstairs when we checked out. The elevator is very small, so they explained it was easier for them to maneuver since they were accustomed to it. Very friendly and helpful staff!
You can either get a cab direct or take the airport shuttle to Placa de Catalunya then cab from there which will be cheaper. Alternatively you could walk from the placa, it'd be about 20 minutes easy walk.. depends on your luggage!
Get an answer from Hostal Boutique Khronos staff and past guests.