We had an amazing stay at Monica's place. The view is outstanding and the balcony is lovely to sit out and have a glass of wine while people watching in the square. The apartment is extremely well located, you are literally in the middle of it all.
The apartment is clean, beautiful furnished, has everything you could need. Good air conditioning, comfortable beds, the windows have blinds that make it very dark at night. Fully stocked kitchen and Monica kindly left us some food and wine, which was a lovely touch.
Gorgeous space to explore San Sebastian, I would highly recommend and hope to return one day.