Bathed in light is a somewhat exaggeration Sadie. The street lights in 2007 were a lot dimmer than they are today since the light fittings were replaced by better ones. The street light only reached halfway up the steps which led to the balcony and part of the balcony itself, someone intent upon entering the apartment could have easily reached it unseen by crouching down.
I agree they were not as strong as they are now, or so we are told.
I agree that only part of the steps were illuminated but , sorry, I do not agree with you that anyone could have gone over that patio without being bathed in light. Virtually all the pertinent parrt of the patio was bathed in light. It was illuminated.
Also with the light on in the lounge area, the moment any one had opened that patio door and entered he had to pull back the curtain. When he opened the curtain a shaft of light would have played on the railings. That would have been very obvious. A give away.
BTW, there was sufficient light in the lounge for Matt to spend a short while reading the titles of some books.
The one place that no-one has thought of for possible entrance is the patio doors to Kate and Gerrys bedroom. I dont think they were illuminated, but I would need to enlarge G,E. images very greatly to check.
Your mate Amaral, however, stated clearly that no intruder would dare go in by the main patio doors, as they were overlooked by the Tapas group at only about 50 metres... and illuminated. Are you challenging him?
Seems tho, that he never even thought of Kate and Gerrys bedroom patio doors as being a way in. No finger prints checked there, as far as I am aware.
If that is the case, then it all seems very slap happy and I have to scorn his sleuthing skills. It would almost appear that he didn't want to know, dont you think?
I think there is little doubt that the front door was used both in and out. So someone had access to the keys?