Numa was very helpful and communication was fast, but only once I had subscribed to their website. I tried to 'contact the host' through the Air B&B website several times with absolutely no response until I was asked to subscribe with Numa a few days before my stay. I feel this should be made clear at the point of booking, otherwise it looks like the host is not bothering to respond. It also makes Air B&B look inefficient. I am making this point so that other people realise that Air B&B and Numa are completely separate, as I understand it.