This is such a great little apartment for a couple or a couple of friends. We stayed for five days and it was perfect for exploring the city. It's so close to the metro, but many of the sights can be reached on foot. El Rastro market is right outside the door on Sunday's. There are also so many great little cafes and bars in the area.
Ulises was great, he came and met us to give us the keys and also gave recommendations for food and gave us some brochures for attractions and sights we could see in Madrid.
He was quick to answer when we needed to find somewhere to print out boarding passes.
There are quite a few steps to climb to get to the apartment but it shouldn't be a problem for a fit person. The apartment was great value, and again such a great location.
We would stay again.