This private room has a great location. 5 or 6 blocks north is the ground level entrance of Atocha train station AVE section, for trains to Barcelona and Toledo. The Atocha metro and local train sections are further away and I did not use them. Instead, 3 blocks south is the Delicias local train station which directly connects to Airport T4 via C1/C10 local trains, which I used from Airport and for local trips. One more block away is the yellow line metro Delicias station. Near Delicias train station has a supermarket and a fast food, both have very cheap price. Halfway to the Atocha train station, there is a laundromat with washer and dryer. Overall, very convenient location.
The host Luis and Luisa are nice. During my three days stay here, I only saw them briefly, and Luisa speaks very good English. It is pretty private with own room and bathroom. They offered me some space in their fridge, but I did not really use the kitchen. The flat is located on 2nd floor with an elevator.