This was a very good stay for us.
All the arrangements worked out well. We arrived very late (by prior arrangement) and collection of the key was hassle-free with very clear and detailed directions. The room was pretty much as expected.
I am very sensitive to noise and I found this to be an unusually place to stay.
I think the following points might be useful to others:
(i) There is LOTS of light, but the lower part of the large glass door looking out to the garden is covered for privacy of the garden. Light comes in but you can't see the garden. Being able to see mainly the sky outside rather than the surroundings made it feel slightly disconnected from the world.
(ii) This is a loft directly above a garage, accessed by stairs within the garage, and there isn't any door or wall across the top of the stairs. You can't see down into the garage much from the loft (because of the turn in the stairs), but still that open space is connected to the room. We noticed a bit of sound during the strongest wind gusts one night as something (a door?) rattled a bit. The heater was very effective in spite of this.
(iii) It seemed that the internet connection was quite slow. We didn't ask about it because we had unlimited phone data anyway on this trip so I don't know whether this was usual. Might be worth asking about data speeds in advance, if data speed is a big deal for you.
The bed was comfortable, slightly on the firm side for me (as a side sleeper). Good towels, sheets, shower; heating worked well; plenty of space.
Good information provided in the room about local eating. There is free overnight parking on all nearby streets; closest all-day free parking is a couple of hundred metres away.