Did you buy off plan? Unfortunately plan does not = commitement its an approximation. My apartment in Block 8 is smaller than the plan I was given by 2sq m but the balcony is bigger by 1 sq m. Also the door to the 2nd bathroom is in a different place - but its a better place now.
I need to look at my plumbing when I get the key and can perhaps can comment further.
I have a ground floor apartment and intend to put spiky plants in the balcony wall pots and they have very sharp spines. Also you should find all lower windows and doors have electric persianas (shutters). You should add if appropriate a center locking lock to sliding doors, these are not expensive.
I have another property in Manilva and added these to all my sliding doors. I aslo add opening grills to my garden patio door thee were made my a guy in Estopona and were very reasonable, I have his details and also the details of a Spanish guy in Sabinillas who does grills/wreckers.
Hope this helps, Jeff