I hold keys for quite a few of my neighbours. I wouldn't have thought a key safe on the outside of the building was a good idea at all. We all lock ourselves out from time to time but even a keyholder a number of miles away is better than a vunerable key safe easily identified with the building. Possibly better under a plant pot or bin or in the wheel arch of a car etc. Really just needs your GF to be a bit more careful too.
under a plant pot or bin or in the wheel arch of a car etc
Even better is hidden inside somewhere locked - bike shed / similar, then hide the spare key to that in one of those places. Or ideally have the first locked hiding place have a combination lock.
I hold keys for quite a few of my neighbours. I wouldn't have thought a key safe on the outside of the building was a good idea at all. We all lock ourselves out from time to time but even a keyholder a number of miles away is better than a vunerable key safe easily identified with the building. Possibly better under a plant pot or bin or in the wheel arch of a car etc. Really just needs your GF to be a bit more careful too.