I would have a bathtub bc we like to soak sometimes. 

@Terry Fox If they don't have little kids, have them fill up the bathtubs with water before the storm hits in case the water supply is disrupted like it is now in Beaumont, Texas.

What if there is a drowning in your bathtub? 

Purchase price: $65,000 Cash invested: $55,000 At 18 Aberdeen Ave, a frozen-in-time townhome, our renovation adventure began with the bathroom—a sight to behold with mismatched tiles and a worn-out bathtub.

At pure retail, a bathtub remodel could cost you $18,000 (my in-laws just paid that much to rip out a tub, and put in a walk-in shower).  

Hi folks, Who is responsible for removing mold from the caulking around the bathtub when the tenant is leaving after a 1-year lease?

.:  Hi Jacob,You seem like a newbe at this.If you can find this square space you can slip a bathroom into it.If you can find a space 6 inches longer, and your renter pool has a lot of overweight people in it, you can opt for a 60 in x 36 in shower pan setup to keep them from bumping up against the walls.Also you can easily put in a bathtub if you think you renters would rather have that (small children typically) .With no bath you may turn away renters with small children--It's unpredictable, but I think a big shower makes the space feel bigger, and with the flexi hose wand part, ladies can comfortable use it instead of a bath--although for some you may have to point that out.So for a shower, there could be downsides, with a bath less risk--that's your call.I put in a storyboard to help you think about it better.Also I swapped the window for a bathroom type window.Many say windows in a shower can be problematical, but you have one now and when showing the unit in other than winter, having that window open makes the bath feel fresh, and a surround would cover the old window.

This blade/pump system services the toilet, sink, and shower (bathtub not recommended). 

Nobody is cooking meth in the bathtub of an Airbnb, nobody is leaving their car up on blocks at an airbnb  but they do all the time in a long term rental.

If you're concerned that redoing the backing behind tile for a bath tub surround is too expensive I think you've got a bigger concern.