I stayed a little more than 4 weeks at the place in Villa Crespo during argentinian winter. The apartement is beautiful an cozy. Hot water, heating, a comfy bed, an amazing terasse and a lot of sun light. The location of the apartment is quiet but you have the busy areas with nice cafes and restaurant just around the corner.
Carolina was very helpful and adaptive to my working hours. I can only recommend staying here if you want to visit Buenos Aires.