I was also a bit disappointed, since I took the time to carefully review and rate quite a few games, but it turns out only 6/30+ people rated mine. It seems to really come down to quality over quantity in the end.
That said, I think one possible reason your game might not have scored as strongly in the “How well does the game fit the themes?” category is the lack of a clearly defined door or entry mechanic. However, I’m not fully convinced that’s the main issue, because I also didn’t implement a traditional door in the strict sense, and still received fairly solid ratings overall.
Apart from that, your ratings look consistently strong across the board, so the feedback is generally very positive.