Thank you for your review, about the 'morning train problem' you had especially. You have, probably unintentionally, omitted a few facts, I now have to get straight.
You were actually our first and, so far, only guests to have this particular problem in now almost three months that we run our Airbnb. You were here while ongoing, fully blown heat-wave, so even well insulated roof couldn't keep the heat out. So you, understandably so, slept with wide open windows, that incidentally insulate against outside sound quite as well as outside temperatures. We thought it must be very hot in the apartment, but a few times we asked you about it, you were very confident in your answer, it is OK, something along that line. Now, I don't remember exactly, if we ever got to actually offering you our portable AC, that might have solved your 'morning train problem', but after you left, we 'felt' the actual heat situation for ourselves and made our portable AC a standard offering. So far, nobody had your particular problem anymore.
About the train track - it is there, just beyond our garden, some 30 meters away. True. But that sounds much MUCH worse than it actually is. Now, it didn't spoil your 'gute zeit' in our apartment, did it? So, what you DO get on the tracks on a regular basis are short 2-3 segmented commuter trains, 14 altogether on a work day and 10 on weekends. About once an hour or less. I have actually measured sound impact with the 'Sound Meter' app, and what you get is on average 15 seconds of sound above background (Phone number hidden by Airbnb) dB) with 5 seconds that can potentially be disruptive, as the noise on the balcony (no obstacles to muffle the sound) can sometimes reach into low 60s (that is level of normal conversation), but mostly stays well under 60dB (in the 'moderate rain' descriptive). And if you are inside, even with open windows, sound levels are significantly lower. We do get, in addition, perhaps a couple, museum steam trains a week in-season, but cargo trains are next to non-existent on this track.
Closeness of the train station (3min walk) is not an asset for reaching our place from Ljubljana, really. There is one direct train from there only on weekend days, in the morning, and one goes back in the evening. (Website hidden by Airbnb)
Bus connections are much more frequent and we do pick our guests up at the bus station if they let us know that is their mode of traveling.
It is, however, a great way to see a little bit more of beautiful mountainous countryside along the scenic Bohinj railway (Website hidden by Airbnb) . All the trains also allow boarding with bicycles, so you can explore emerald Soča valley that way (there are also guided bicycle tours), or if want to feel Mediterranean climate while you are in the midst of Alps. At 'Most na Soči' (one hour by train and about 1,5 km walk/bike ride) in particular, there is an accumulation lake, where you can, among other things, have a great meal on a river paddle boat ride for very reasonable prices... To cut it short, if you take 5 day or more vacation at Bled and don't experience at least one option that Bohinj Railway offers, I really think you are missing out.
There, I said my peace.