Need recommendations for room in Medellin

My date from Bolivia is currently set to head to Medellin on a 4 day work related trip, she ask If I can come see her Friday-Sunday of next week 9/4-7. She does have a room during the work stay but cannot extend for another 2-3 nights at that hotel. Any recommendations for us in the city of Medellin, Colombia would help on short notice.