Jero was a great host, he was easy to keep in touch with and replied to messages straight away. He also met us later than expected as our plane was delayed. Communicating with Jero was very easy. The apartment was just what we needed and is in a very central spot, everywhere was easy to walk for us. The apartment was very clean, felt very safe, the only 2 things I'd say are:
1. some tea/coffee in the cupboards
2. The apartment is a little smaller than the photos suggest but everything is in perfect working order, beds are comfy and clean and the location is fantastic
I'd recommend Jero and this apartment and would like to stay in it again should I come to Madrid, which I hope to as it is a wonderful city.