The apartment is small, clean, well-equipped, and convenient to the city, metro and key attractions. Stefan was very helpful and responsive in his communications. The regular cleaning service was a real bonus. Some party noise from an adjacent building on Friday and Saturday nights but nothing too extreme.
Building has a nice rooftop entertainment area with BBQ, panoramic views and a pool that's open in the summer months.
Stefan runs an excellent language school by the way; I did some Spanish lessons there.