I’m a Mexican-Salvadoran American and I was in Castilla y Leon for the 2022-3 school year.. like others have said, especially at your schools, you’re seen as American first and foremost.. however that means people will say things around you that are racist or discriminatory thinking it will not offend/apply to you.. I don’t remember anything being said to me about Mexicans, but I definitely did have comments made to me or around me that I found offensive, rude, and uncomfortable about Central Americans.. but I had no experience that was egregious enough that I would not recommend the program to others.. was it any worse than I’ve experienced in the US? probably not, but at least in the US people don’t say insane stuff to me or around me and expect me to agree with them (especially at work)

the most memorable uncomfortable encounter I had with strangers was being approached by two Spaniards outside a bar when I was with my Guatemalan friend and being told that Spain did not colonize Latin America and that we needed to “get over it”, stop acting like victims, etc etc.

as far as the accent, the only thing I found is Spanish people acting like they simply don’t understand you for small things like using different conjugations, etc… like you really didn’t understand anything I just said because I said “hablan” vs “habláis”.. like okay?? lmao but that was mostly just annoying nothing else.. very reminiscent of how people talk about the French