在英文中，你可以用以下方式来形容一个房屋很小很旧：

The house is very small and old.
The house is cramped and dilapidated.

"Small" 指房屋面积不大，"old" 指房屋年代久远，可能有些破旧。"Cramped" 指房屋空间狭窄，"dilapidated" 指房屋破旧不堪，有些松散或损坏。

你也可以用以下方式来进一步描述房屋的状况：

The house is tiny and run-down.
The house is in disrepair and looks abandoned.

"Tiny" 指房屋面积极其小，"run-down" 指房屋破旧不堪，可能需要维修。"In disrepair" 指房屋有破损或损坏的地方，"abandoned" 指房屋看起来被遗弃了。

例句：

I can't bepeve anyone would want to pve in such a small and old house.
The cramped and dilapidated house was barely fit for habitation.
The tiny, run-down house was in desperate need of repair.
The house in disrepair had an abandoned appearance.

翻译：

我简直不敢相信有人会想住在这样一个小而又旧的房子里。
这个狭窄而又破旧的房子几乎不适合居住。
这个小而又破旧的房子迫切需要维修。
这个有破损的房子看起来被遗弃了。