When I called to make a reservation from 8/4-8/7, the Hyatt Rep advised me that the hotel is not scheduled to open by then. They said they had booked the Hyatt Regency Lisbon for another customer staying in August and the customer received an e-mail telling them that the property was not going to be open by then. It's clearly still bookable for any date later than July 21st through Hyatt's website but at this point, seems highly unlikely it will actually be open by even early August.