The room we rented had a private bathroom and amazing views of the hills outside San Sebastian. Everything was clean, the furniture was all new, and the room was spacious and comfortable. The house is perfectly located if you are touring the area by car - it's about a 15 minute drive from the center of San Sebastian and close to other, smaller towns in the area that are worth visiting. Miren Josune's house provides the perfect getaway from the busy city, since it's quiet and peaceful.
It's important to note that the breakfast is NOT included in the price, as Airbnb states (they're supposedly working to change that). Our hosts were always available and willing to help us out with tips of where to eat and what to visit, and were kind enough to provide plates and glasses for the nights that we brought food and ate in our room.
Highly recommended stay!