Evas place is very clean and you have everything you need. The room + WiFi is perfect for doing home office.
You need about 20-30 minutes to go to the centro by metro but that’s quite normal for Madrid. There are some food chains like dia or carrefour in a walking distance of ~1 km or less.
I highly recommend the place. It was just perfect - Eva was always so nice and brought sometimes salad or vegetables from her garden.