It is certainly not reference in any form to those nice young ladies who stand or sit by the carreteras here in Spain while they practice the "Oldest Profession".
People judge books by their cover, we all do, so you have to make sure that in the current oversupplied real estate market the "cover" on your book is sufficiently attractive to induce a positive all important first impression.
Of course if you are to commission The Villa Painters to undertake such a contract then you will also be provided with our "Ten Year Maintenance Guarantee" which can be passed on to any new proprietors of the property. Another aid to making the sale.
You only get one chance to make a good first impression so use it!