Our tour of Barcelona was fantastic! We were treated very well, by the morning guide. The afternoon guide seemed a little grumpy, but was otherwise very knowledgable. The bus/ driver was great and with the working air condition, it is such a relief to come back to after a long walk. We just loved the Spanish village with all its quaint little shops. Of couse the Sagrada Familia was so amazing. I have booked other tours on Viator from home, prior to leaving overseas and it's definitely the way to go. Everything is set up and taken care of when you get over there. I would definitely preach to anyone going on a trip, to use Viator and pre-book tours. It saves money and it relieves the stress.