We took our kids here for a week long trip to Madrid. The flat was bright, clean and modern and there was plenty of room for the six of us. We had a really comfortable and enjoyable stay here.
The flat is on the outskirts of the city but it is really easy to get into town using public transport. There is a bus stop on the street in front if the block (the number 20 runs every 8-12 mins depending on the day) and it takes about 10-15 mins to get to the centre of town. The nearest metro station ( vinateros) is an easy 10 min walk away. There is a decent sized supermarket 5 min walk up the road. The apartment is on the 5th floor but there is a lift.
Francisco was really friendly and helpful. He gave us some great tips for restaurants and places to go and even organised our taxi back to the airport.
A really pleasant apartment representing good value for money if you don't mind a relatively short hop on public transport to get in and out of town.