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The simplicity of a change depends a lot on how the demarcation point is set up. Usually there is a change in the Fibre cable at the point of demarcation. In a single family house situation, the fibre from the pole ends, and the fibre to the dwelling continues from there. I'd not want the ONT in my bedroom, either, so understand how you feel. I suggest contacting Telus to see if replacing the Fibre with a longer strand is possible to move the ONT to a more suitable location, such as your living room.
SFP makes no real difference for you as the end of the fibre is still in your bedroom, and the router is elsewhere. SFP would generally not be an option in residential settings, as the fibre needs to remain undisturbed, and attaching it to a movable router will just cause ongoing problems as the router gets moved about.
Weird. My friend got a SFP installed in his basement suite.
I'd be concerned how much the fibre would be moved around in the long term. I've never touched my ONT in the year I've had it except to use a longer Ethernet cable.
Traditionally inside wiring is your own responsibility.
Telus publishes wiring guides for the building industry that might be useful:
If you want to move it yourself you can get a length of singlemode fibre with SC connectors and an SC coupler/adapter to extend the fibre somewhere else. Pre-terminated fibre cable is cheap. If you have a choice of singlemode fibre get one certified to g657 standard bend insensitive singlemode (it's like the cat6 rating of copper but for fibre)
Connector ends are SC UPC
If running in an air return you need fire resistant jacket material (plenum rated)
And for the outer size the thinner ones are easier to hide but with a slightly higher chance of breakage if it gets badly kinked or snagged though the new bend insensitive fibres are amazingly resilient. Older style single mode fibre will work fine too, it's just much easier to break if it gets kinked.
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FS.com (specializes in fibre and can make custom cable for you):
https://www.fs.com/products/41923.html $4.96 (15m or about 50ft)
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