Julio's place is great! First off, very convenient walk from Atocha train station (about 10-15 minutes; on the map looks deceivingly close but Madrid's scale is just that much bigger). Julio is a great host, greeting us when we came in, and giving us great restaurant recommendations (Juan Raro is delicious, definitely get the huevo poche - as Julio recommended).
The place is better than the pictures look, and had everything we needed. The appliances are modern. The shower head is huge (like being caught in a downpour) which is a nice plus :) Also there are 2 A/C units (in the master bedroom and common area) which was much-needed for my family and I in the Madrid summer. I loved the city of Madrid and plan on coming back. If I do, I'll definitely come back to this place.