It waxes and wanes. now and then we get a whole guild stop buy or something. Sometimes only a few people.
I'm not planning on ever going over to player housing locations every night. But at one point there were 5 good sized player taverns signed up,and I had hopes of alternating world locations and player taverns (note, not all of these have to be held in houses--in fact the 3 remaining arent). I want to get more hosts, and also make use of the cool locations people have built.