Great price for an awesome location! You will be staying with other renters but Gisselle is on site, too. Within 15 minute walking distance to almost everything - from Retiro to Plaza Mayor but closest to the Prado & Reina Sofia museums. Plenty of places to eat or pick up a last-minute souvenir are within a 5 minute walk.
This was my first Airbnb, so I was reminded of things I had forgotten about staying in homes in Spain. If you’re not accustomed to travel abroad or home stays, you may prefer a hotel for the amenities (just thinking that I am probably the only person in my family that could stay in the shared situation).