The aparment's location is perfect, it's 5-10 minutes walking distance from any corner of the old town. You step outside and you are already in the middle of the buzzing nightlife. You couldn't ask for more.
There are a couple of serious issues with it, however.
The first one is noise: it is very busy late into the night, ranging from sightseeing groups to young folks after a night of drinking shouting at their phones to friends who just arrived to the airport at 4 AM. Also employees of old town restaurants and bars making late night calls in this back-alley street right underneath your window. This is by no means the host's fault.
The second issue is the noisy refrigerator. Take note that the fridge and the bedroom are practically the same and you will hear the fridge turning on and off every 15 minutes.
The third issue is that the apartment is full of light even at night, since there are no drapes or blinds installed for the largest window. Easy to fix this one.
The fourth issue is that once you step inside the apartment, you already feel how damp and stuffy the air is inside, there is no ventillation. We had an extra reason to spend as much time as possible away and only come back to sleep. Not sure what can be done in this regard.
The fifth issue is the air conditioner. We decided to make use of the kitchen that it has. We used the air conditioner the night before and realized that it had inundated the shelf over the sink because it was dripping. Problem was, this shelf also contained the tray for silverware and this was inundated. Not sure this was caused by our 30 minutes cooling session, because the water was quite high and already had an awful smell - and we had no reason to check the tray beforehand. We lost all appetite and went outside to eat instead.
The final issue is that there is no dedicated space for drying clothes. Since you have every intention of also visiting a beach nearby, you might want to put out your swimming equipment (swimsuit, towels, flip flops) to dry. Problem is, you need to improvise, since there is no dryer in the apartment. We used a couple of hangers and put them on the valance to also have them as sort of drapes.