For a week's stay, the apartment is functional and suited our purposes (working in Madrid). But our experience was undermined by the fact that after the stay the host claimed we needed to pay 400€ extra for damage (a stain on a wardrobe) which our group was not responsible for. I stated this in good faith. There was no specific justification for this amount (host stated it was an estimate), which seemed a little arbitrary and would mean an extra 25% on top of what was already paid for the stay. The situation is currently being mediated by Airbnb. While the apartment was clean on arrival, it showed several signs of "wear-and-tear": the kitchen floor and sideboard, and one of the bathroom floors had marks and cracks; an A4 sheet was sellotaped to one of the walls. It therefore needs a bit of attention generally – which also made the claim about the wardrobe a little baffling. Host does not live in Madrid, so perhaps there was some confusion. While it suited our purposes and is well equipped, the apartment is not a home-from-home.
Up to check-in, communication was fine; communication regarding potential damage (see above) rather limited, inevitably.