I really loved Madrid. There's so much to see and I only had one week. I relied totally on metro for transportation. It's fast, cheap and fairly easy to figure out from their website. A 10-trip pass is 12.0 euros, so quite affordable.
This Airbnb location was great literally 3 minute walk from "Vinateros" station and because line 9 (purple) extends along Retiro park and all the way up north into town. However, connecting lines can also quickly get you to Centro and all the primary tourist sites further east. There are a few supermarkets about 5 minutes walk up the road. "Supermercados Dia" was the best (in my opinion). Decent prices and selection of every day needs.
The room and apartment is a bit small, but perfect for a solo traveler. There is no lock on the bedroom or shared bathroom door, but the host has a sign to indicate when the bathroom is occupied and I had no problems at all with privacy or security, and very much enjoyed my stay here. Everyone in the apartment was friendly and kind. I slept good at night and other than a little noise from apartment upstairs, it's a quiet place and relaxing. The shower is always hot water and shared fridge kept my drinks and other groceries cold. I used the washer to do a small load of laundry to get me through the end of my trip and it works perfectly, line drying the clothes out the window afterward.
The neighborhood is nice. Another reviewer commented on feeling unsafe, but I felt completely comfortable the whole week. There are always lots of people outside and families and children playing in the area. For me, it was a great area of town, so I was confused by that review, though it worried me before I arrived, I felt very comfortable and safe during my whole stay.
Alexandra was very helpful before and during my stay with lots of suggestions for places to see and visit and how to work metro and the bus lines to get around fast, cheap and easily. Madrid has a great public transportation system and it saved me quite a bit of money over my usual Uber way of getting around.
I would certainly consider staying here again next time I come to Madrid. Thanks so much Alexandra!