Problem solved!!!
We have an economy flight to Barcelona that leaves Portland, Oregon at 7am, arrives in Barcelona at their 6am. We are not able to get into our hotel room until 4pm/16:00, and due to health and age concerns, we had been very worried that this would be a horrible start to our trip until a cousin tipped me off to this hotel option. Dayuse Hotels in Barcelona • Hotels by the hour | Dayuse.com
We now have a hotel room for the hours 11am-5pm/17:00 for $81. It is cancellable and very close to our hotel that I had reserved.
Dayuse is not limited to Barcelona, so if you have the same issue, especially flying from the west coast, check this out. We still plan to use Rick's advice on getting outside as much as possible to set our body for Spain time, but will be able to rest a bit and stay safely on our feet.
Molly