When DC was looking at schools I was told by three different people who had three different types of connections to the school that it was a cold, competitive place and DC should look elsewhere.
I went to JHU and disagree. It is not as structured as other schools. So, those students with more initiative will survive. Those who need more hand-holding to learn how to take care of themselves, how to find information, resources, etc will not cope well. In my years there, I found those who could either take care of themselves, or learn to take care of themselves did the best. I saw several intelligent products of helicoptering parenting who failed miserably. The school requires that you figure out where and how to look for information and get the most out of your education, but I still have a core group of friends from about a 10 year space of graduating classes and we all enjoyed our time there and got a lot out of our education.
My nephew who just graduated from college, applied there and came to visit and I took him on a campus tour about 5 years ago. The campus was significantly bigger and better than it was in my time and the services were better. I spoke to a number of people on our tour day and we had a nice tour guide. I found that while there were more groups and services, there was still the basic assumption that there was relatively little guidance to get through the school, but that the school offered the opportunities and it was up to the students to choose and take advantage of those opportunities, but very little in the way of mentors, counselors and guidance. And the then current students that we met also enjoyed the school.
So, I suppose it depends much more on the type of person your child is whether (s)he will enjoy and thrive at Hopkins.