I took a tour with Olga more than four months ago, and even though it's taken me a while to get around to it, the experience was so good it's worth coming back to write about. We took a small group tour around Park Güell and La Sagrada Familia. Olga was both friendly, engaging, and very knowledgeable. We count our experience with her as the highlight of our time in Europe and would definitely recommend her to anyone looking for a guide to Barcelona.