Harry's home looks like somewhere i'd like to live. which doesn't jive with the books, but is much nicer to look at on my tv and is vastly better for entertaining clientelle (and vampire molls). it looks like an eccentric bachelor pad to me - some of the walls clearly need repainting, there's what amounts to occult geek-sign on the walls, and some masculine furniture. it's pretty nice, but it could be in the tv series that Harry is better paid and has more regular gigs than book-Harry.
Have to agree with you there.
I guess it's just one of those things we have to live with. As you said, TV!Harry is better paid than book!Harry (at least 1000 dollars per job vs 50 dollars an hour plus expenses)
Another thought would be that on the show he doesn't have this massive problem with technology. From what I made of it, he can control is way better than in the books. So why not have him a "functional" kitchen, heating... I guess it'd take some more exposition on the show as to why it's always cold at the place etc.
Also... it might be easier to shoot at. I'm no expert but I guess it's pretty tricky to shoot at a place only lit by a fire and the occasional candle.
I like the place. It's... cozy. A little messy around the edge but I like all the stuff cluttered everywhere. That is pretty Harry-like for me

But that's just me then
