Lovely little apartment in a good location (less than half an hour walk to Plaza de España). Residential area with lots of little cafe bars around but the area is not too noisy. We took our two young kids and there was a lovely play park just over the road that they enjoyed very much. Plenty of little supermarkets nearby.
The apartment is on the 6th floor and there are two lifts in the building. It has two good bedrooms with air-conditioning in the master bedroom and the living area. Nice living area/kitchen, it also has a lovely little terrace-balcony to hang out in. Basic cooking utensils, cutlery and crockery are present in the kitchen. Microwave, dishwasher and washing machine all useful and very much appreciated.
There are a couple of issues with things that need fixing (door buzzer, bathroom drain, coffee machine) but we have highlighted these to the owner and they should hopefully be fixed soon. The place is generally clean.
All in all it's a great place to explore Madrid, suitable for a family and nice space to relax in.