Lol Clarity
I was literally laughing out loud at your outside shower worry! A garden hose!
The open air/ outside showers are fun! A lot of cliff properties have them actually.

Catcha is in a really good location IMO
Plenty of good places in walking distance like Sharks and Ros Roddy, even LTU. You can see Ricks cafe from the property so you have the great view without the crowds. You could even walk to Seastar or Negril Escape (for the concerts if they are running)

The $49 special you mentioned is actually for there other property which is called Catcha Falling Star Gardens. It is up the road a bit and on the other side of the street, across from LTU pub

Here is a link to Catcha on the cliff. This page will take you to their last minute specials. Usually throughout the year if they have vacancies they offer them at a discount a week or two before the date
http://catchajamaica.com/special.htm

I say go for it, Catcha is awesome, you will love it no matter what room you stay in.
Oh and every hour at Ivans is happy! Lol