No Quarter is one song
Weak:
The Rain Song
The Crunge
D'yer Maker
Dancing Days
The Ocean
That's right, weak. The first 4 crush this junk. So do Physical Graffiti, Presence, and In Through the Out Door. There's a lemon in every group's discography and Houses of the Holy is Zep's pits. This was Zep's last album for Atlantic before forming their own label (Swan) and they mailed it in.
It is also the album that clearly shows the damage to Robert Plant's voice from all of the screaming. His range on this and succeeding works is much narrower.