The first thing to say about this hotel is that it is very cheap, similar to the price of a hostel but you are getting a private room. If you need an exceptionally low cost private room and that is the most important thing for you, maybe you can overlook the negatives.
Despite being advertised with air conditioning, it has only a medium sized fan attached to the wall, which if you're more familiar with colder instead like me is simply not sufficient. I was barely able to sleep because Medellín Is very hot during the night and the room is even hotter. Whilst the room wasn't dirty I wouldn't say it was particularly clean either and the staff are polite but a little unfriendly.
I wouldn't stay here again, however if it actually had the air conditioning it advertised then possibly I would because for the money it's a cheap place just to sleep whilst you enjoy the city during the day and night.