Cosy (not too big, but as far as we understood more than aveage sized appt in Madrid)
Bathroom and kitchen have everything you need during your stay
Excellent location, near the city center (5’ walking from Gran Via)
Quiet at night and in the morning
Perfect for a stay with up to 3-4 adults for a short trip to Madrid
Practical arrangements to get entry to the appartment, even when arriving late at night
Very responsive host
... and the perfect climate in September/October making it an excellent city trip :-)