Add hotel
name=Coco-Mat Hotel Athens 
address=Πατριάρχου Ιωακείμ 36
rooms=39
website=https://www.cocomatathens.com
phone=00302107230000

Also add node: 
amenity=restaurant
outdoor_seating=terrace

For the building:
architect=Εμμανουήλ Λαζαρίδης