Krishna is a thoughtful, excellent host. The proximity to the metro is an asset. It’s a quiet residential area so it’s best to stay discreet when you stay with him.In case you have a lot of luggage then be aware there is no lift and you have to lug it up. The incline to the metro station is steep. This should be no problem to most travellers.
Overall, the host is exceptionally hospitable and it’s pleasure to stay with him as you explore Madrid.