We were really satisfied with Marta's appartment.
Yes, the neighborhood is a bit noisy.
It is the downside to being so centrally located.
The kitchen could benefit from a few additions: a dishcloth, a peeler, and above all, a toaster. While we all found the mattresses comfortable, two of the four bed pillows were very hard. Those are minor things that could improve the guests' experience.
Marta was really reactive to my messages, which I appreciated.
I have no hesitation in recommending this appartment.