Great location in the Old Town, and Maria and her son very responsive and helpful.
However, one thing you should be aware of before booking is that it is incredibly noisy from the town until 4 or 5am in the morning. For me, this made it almost impossible to sleep.
Additionally, the shower needs maintenance - it often makes a whirring noise that can be heard throughout the apartment, and cannot be set to a temperature other than scorchingly hot.