I'm a guy who likes science fiction, and sometimes a classic.
House of Suns already has plenty of reviews. I agree the most with the review from William'sBookBlog. Compared to other sci fi, this novel is set in the distant future. For me that makes it harder to identify with that setting, but a story in such a distant future does have its own charms. And it's also compensated by the fact that it's a rather good story.
While it's not a 5-star masterpiece, the book did contain a lot of good stuff: a good story, sci fi concepts that made me think and smile, plausible astronomical settings and characters that are good enough. I liked it more than Revelation Space and will give it a score of 4+ out of 5.