I think there's maybe a bit too much light in there for the spawner to work if/when monsters get switched back on. I'll have to revisit it if that happens.

Also, I used the underground bit near the teapot as the marker for turning right again. It meant raising the floor in one room by one block, and I need to replace a single block of earth that had a flower on it. Sorry.

Cunning. I like it.

It also has a big glass tunnel running through the middle of it now, so no-one will ever spot it.

I'm not sure one's been set. There's a small entrance in the edge of the lava lake near Kos's house and a couple of ladders in the middle of the sea somewhere. Or you could use the secret staircase near the teapot.

Not the teapot near the original spawn. Which is the one I thought of originally when Kos said it had reached the teapot. That confused me a lot.