I recommend the Mondrian, which is about two blocks south of Logan circle. Here’s the link: https://themondriandc.com/

It was built in the 80s and is all concrete. I’ve lived there for several years and have never heard anyone else while in my apartment. The building is a bit old/weird (the fitness center has bookshelves in the middle of it ?!?) but I’ve generally liked living there and it’s fairly quiet. The only noises which I regularly hear are from outside the apartment (fire trucks).