The flat is very open-plan and is a lovely space: generally clean (with the exception of the kitchen and toilet room bins during our stay, which had a noticeable smell) and very modern and well-decorated. I liked that the toilet, sink, and shower were all separate but close, and the towels and toiletries provided were good. It is worth noting that you can always see the whole flat (minus the toilet and shower) from wherever you are, so privacy can be a little difficult. Both the double bed and the sofa bed were very comfortable, and we loved the shutters outside, which blocked light very effectively.
We enjoyed our stay here and usually ended up walking to and from the centre of Madrid, as it is a similar length journey whether walking 10 minutes to the Metro to wait then take a 10 minute ride or just walking 25-30 minutes! The flat was difficult to find, as it is tucked away in a sort of side street, so a little more detail in the instructions would help.
Jesus was usually fairly responsive to messages (with the exception being when planning arrival!), and we knew we could ask him any questions. He gave Zoé some advice on what is available locally (e.g. supermarkets) when she arrived, but I didn't meet him myself as I arrived a little later. He did pop in a couple of times to pick things up, which he always checked with us in advance.
I feel like the flat could have been even better with a couple of personal touches, e.g. some basic food items in the fridge/cupboard for breakfast, local food recommendations (especially as we were out of the city centre), maps of the area/metro maps/bus information, etc. Overall, however, it was a very nice place to stay and was good value!