Thanks for the feedback Carolin. Taking each point, please see my response:
The noise was clearly a big issue for you, which was a surprise to us as we bought the apartment a few years back and bought it due to is being quiet - the noise from the road is fully mitigated by the acoustic barriers has been my experience and this is the first time this issue has been raised by any guests. The fact that the annual "las fallas" festival was on during your visit may have been the cause. We have never heard the neighbours and it has not been raised by any previous guests over the last few years. Again, the festival may have been a factor.
We thought the odour may be to do with the apartment being closed up for much of the winter but the following guest has also mentioned it so we'll have that looked into. Thanks for highlighting.
Sorry about the microwave - the previous one was looking a bit tired so we had our agent replace it - has now been unpacked and words had with agent regarding ensuring things are right for our guests.
Electrical capacity has not previously been a problem for us - will check that there are no appliance related issues.
Sofa is two years old - will have them deep cleaned.
Bathroom is due to be modernised and bed to master bedroom to be replaced - on our list of things to do this summer.
Apologies if the picture of the ocean was misleading - was not meant to be, only there to show what the beack looks like, i.e. sand rather than stoney. This is why we do not mention sea views. Hopefully you enjoyed the view of the pool and boats.