Yes, Pakistan is completely safe to travel. Several international tourists visit Pakistan yearly. According to the report about 1.75 million tourists visited Pakistan in 2017 alone. The people are friendly and if they see some foreign they feel excited and try to talk to them. They offer them tea/coffee and meals but never allow you to pay. They invite foreigners to stay at their home. There are lots of things even I can't imagine. But I've tried to list about 46 fascinating facts about Pakistan in one of my recent articles which may help you alot in your research, check it out here https://steemit.com/pakistan/@mkhan6131/46-fascinating-facts-about-pakistan-real-face-of-pakistan