Barcelona, Spain--We did 2 days of the hop on hop off bus and that worked well to see all of the main sites. Used Booking.com for the hotel, Barcelona Rooms (yes that is the name of the hotel) we booked at room with private bath. It was near the subway and an easy walk to La Rumba (shopping street). The room was clean BUT would not stay there again-it was loud at night-people talking & dogs barking made it hard to sleep.
The hotel was 1 block from the bus to the airport--very easy 5 euro pp. Oh at the airport before you go thru the last security check if you want to do any final shopping to use up any euros head downstairs. Once you pass thru the last passport check there is no way to access the lower level of the airport where all of the shops are located. They do have a duty free shop and a small cafe on the upper level.