Chelo's place is great for a few nights in Madrid. It is centrally located with everything you need close by and Chelo was very quick to respond to any inquiries.
However, there was loud construction in the building during the day (the guest should be made aware of this beforehand).
Aside from that, the place was adequate for some nights and Madrid and Chelo is a great host. The internet functions very well if you need to work from home. I would definitely consider staying with Chelo again on my next trip to Madrid.