I want to be totally honest here.
I don't actually think this episode is bad. I find it a little dull and boring to watch (because I'm generally not interested in a lot of home shows so I didn't really get the point of a lot of the conversation between characters), but I think the only real reason I like it is because I absolutely adore Squilliam. I love episodes with him, he just sort of brightens everything and he's so snobby. I love him. I think he makes up for the episode not being drop-dead fantastic.
I think my problems with the episode are the toenail scene, and how stupid SpongeBob is. This was the time that his IQ dropped to, like, -500.
But, meh, overall, I think this episode is worth at least a 6.5/10 to me. I actually really enjoyed it, mostly for Squilliam and just looking inside his house.
His house is almost as beautiful as his unibrow. But nothing could beat that unibrow.