The place is itself can be great - the personal flair and profoundly decorated place make for a levitating atmosphere.
Carolina and her co-workers were friendly, welcoming, informative and to some extend pedantic, but remained unresponsive after we tried to resolve the issue unfortunately published here now.
We all sat with woolen hats and jackets on for the first two nights, because the promised heaters were quite ridiculous against the damp and cold, which was still rather prominent around March.
The eye-catcher amenities (advertised at the time of writing in all caps) actually led to a stuck situation -
fireplace : not for guests' actual use,
heaters: small, insufficient (their use is prohibited when not attended - so, even if it's warm outside, the flat will stay cold, because the heaters must be switched off, when not attended).
We would only recommend this flat for summer vacation, hesitantly.