I never had any issues in Spain. Ive been in very rural places too. Badajoz, medellìn, Don Benito, caceres, salamanca, merida, Madrid, Seville, Cadiz, el Puerto de Santa maria, valladolid, Barcelona. Sure, people look at me in certain places because they don't see many dark skinned a lot. My Spanish is not amazing either but I always try my best people appreciate the effort. I think as a whole Spain doesn't have issues with black people but more so with Latin Americans and North Africans like the Berbers.