Mexico City Accommodation Rec

Hello!

Recently learned I'll be going to Mexico City for a week in April for a training course. I've never been there and it's up to me to find accommodations while I'm there. Does anyone have any recommendations for good places to stay? I'd like to be near the Juarez district and I'd like it to be on the cheaper side of things. Looking for someplace with some authenticity and culture. Thanks in advance!