Ramons flat is simple but very well located. You have everything very close around you and you can Walk to the PRADO, the REINA SOFIA and all the beautiful Quarters in the Centro. In the flat You can have breakfast at the small table in the kitchen but it‘s not very comfortable for Dinner - but why staying inside: you are in Madrid! For sleeping it is better when you are not more than two persons because the Couch in the kitchen is not very confortable and you have to arrange on your own. When it‘s sleeping Couch you really don‘t have much Space in the kitchen any more.
With the airport transfer Ramon was really helpful. At the arriving I did the Check -in with one of his colleagues and the communication went difficult with missunderstandings until and for the Check out. So my advice: Fix everything in advance with Ramon and do it via writing.