I stayed at Antonio's place for 4 nights in March. I arrived around 16.30 in Madrid's airport, Antonio was waiting for me at this place at 17.30. Quick and basic check-in, I wasn't asking for anything else.
Basic apt. at GREAT location, right at the centre of Madrid, 2' from the closest metro station, a couple more stations 5-10' walk. You'll find several restaurants, take-aways and shops around, no problem at all with that.
Basicly cleaned, not perfect, but you can't ask for more for a few m2 loft at the 5th floor of a very old building. Note that there's no elevator. The appartment had pretty much everything you need if you're someone who just wants to crash after a long day exploring Madrid.
The bed was comfortable, there's an air-condition which did a great job warming the small place when needed. Also there's a small TV that I didn't use at all.
Bathroom had shampoos, little kitchen had a little fridge, glasses, plates etc. Travelling solo and I would not ask for anything more at this price.
The great advantage is the location. Walking distance from some stuff, short distance from other attractions, food and shops around, 30 mins from Madrid's airport by metro.
Very satisfied.