I am no expert on flow (struggle quite a bit with it), and seeing as mizal is already going to help you out with that, I figured I'd give my opinion on the other questions.
Hopefully you get something out of it, even if doesn't really help in regards to the flow.
First of, your choice of vocabulary definitely has an impact on the way this reads. The sentences are also rather detailed, giving a good impression of the setting and even the character.
Thinking about whether it is clear the Bromwin is looking out the window makes me think he is looking outside the window, so my opinion is a bit biased now.
Anyways, I'd say it is pretty clear, or at least made clear when he turns away from the window.
Seeing as he is in what I take to be an Inn (it has an inkeep after all) and the fact you mention that "From his vantage" strongly suggest that what he is seeing is being done so from within the Inn. And unless there is a large hole in the wall (which would have been mentioned earlier) a window is the logical thing to think of.
However if you are worried about this, it can be a good idea to just mention the window more specifically. That is unless you feel mentioning it specifically would detract from the quality/style you are going for.
I should mention that this definitely appears to be some very high end writing, to me at least, and as such I feel a little weird trying to evaluate it, since I get the feeling you would be able to do it a lot better then me, despite being the one who wrote it.
However I'll still finish writing my thoughts here, since a view of someone who has a pretty simple writing style might help you out with something.
mizal mentioned Lovecraftian style, which is something that didn't come to my mind right away. However having re-read the post I can totally see it now. I like to think that I would have drawn the connection on my own if I had more of this to read.
As for the paragraph's transitions into one another, to me it read well. Each paragraph seems to be pretty focused, and as such they fit together well with each other. Further since they aren't completely separate either, ie. "sweeping view of the capital." => "From his vantage," and "great feasting ground fit for hell." => "Grimacing, the Master turned from the window.", they still feel connected.
As such I'd say you done a pretty good job separating the writing into paragraphs.
Honestly I can't really comment on what you could do better, to me this all looks great to me. I feel the main thing you should worry about is keeping this level of quality throughout.
Also do pay attention to what mizal mentions in regards to flow, as with this level of writing you really do want good flow, otherwise the whole thing becomes very difficult to read, specially the more of it that you read.
What I mean with this is: I can't really point out mistakes in the flow, however that doesn't mean none exist, and even small ones can end up adding up throughout the whole story which would end up greatly detracting from the quality of writing, which would suck, since the writing is definitely great.
As for other critiques I'll just try to answer the questions you used as examples (thus less work for me):
I found this rather interesting, the setting is established with great detail but doesn't drag on forever, also the exposition levels feel very minimal which leaves me wondering about a lot of things, and as such makes me want to read more in the hopes of getting some answers.
The last paragraph you have posted definitely grabs my attention the most, and again the levels of detail are high and while there is some exposition (if that is even the right word in this case) it isn't crystal clear and still feels rather minimal. This leaves me wanting to keep reading.
I highly hope you keep writing, heck posting more stuff for me to read would be appreciated, even if I get the feeling I won't really have new feedback to offer (if you can call what I wrote here feedback to begin with).
I feel my usefulness is reaching it's end, so I'll end this here. If I suddenly think up more stuff I'll post it later.
P.S. This is all just my opinion, so don't worry about it too much. However hopefully you manage to get something out of it.
TL;DR
Very high quality writing here (in my eyes). Hope you write more. Listen to mizal's advice on flow, flow is very important! I liked this.