Minecraft can villagers sleep in 4 beds which are on top of each other?

My friend and I are planning to protect a village in Minecraft, as we want to have more villagers in the village, we need more beds, too (to save space) we stack 4 beds on top of each other… So the villagers have to go to the beds do they come or need to be within reach? Is there a limit for villagers in a house or a limit for villagers in a city? Or are there other tricks to get more villagers to the village?

So there's no limit as far as the villagers are concerned but the one with the beds does not work best you put them next to each other and builds more houses