I just got back from my second trip to Copán. The ruins are definitely worth checking out even if it is a bit pricey for Central America. I made some friends last time I was there so I spent two days with them before going back to Guatemala for the remainder of my trip. Most people in Copán are very friendly and genuinely good people… but like anywhere tourists are there is likely to be a bad element. No outright crime, but lookout for all the vendors and people offering you tours or rides that are not what you were expecting – many people are trying to make a quick buck.