Hello, I could use some advice. One of our tenants wants to put up a temporary pool. Initially, this doesn't sound like a big deal however after thinking about it I have concerns about liability, flooding the basement if it's too close to the house, reseeding the grass, and hoping she takes it down when she moves out. Does anyone have advice on what to do here? Should I simply add a liability clause to the lease and say go for it?

Thanks!