If you choose to park your car in the street in Marbella there’s a few things you need to keep in mind.
First if all the streets are narrow and the driving culture in Spain is a bit ‘rough’. Meaning other people parking near or driving by your car can hit it and they don’t care. So park as close to the sidewalk as possible and fold in your mirrors. If you are driving a rental car make sure your insurance is covering dents and scratches as you can easily get one.
Second thing you need to be aware if is the color of the lines where you park. White lines means free parking, green and blue means you have to pay. This is done in one of the machines by the street and you can pay a maximum of 1,5€ at a time and depending on the street where you are parking, the time you get for the 1,5€ vary.
Third thing to keep in mind is that it can be hard to find a free spot so you might have to circle around a few times to locate one.