I understand what your saying about water pressure in Mexico, and sometimes they don't have HOT water, but this is usually not the case in the Zona hotels with showers.
Lets take Cascades for example as I recommend it for the cheaper monger, who is not to familar with Tijuana, because it's right where the action is for about $35. It's in the alley by Hong Kong/Miami bar, the shower works great, and it doesn't have a filter to slow water like in the states, the problem is the drainage, the shower is on a flat floor with no barrier to keep water from going in the bedroom except for the shower curtain. So the water comes out hot and hard, but if you take more than 5 minutes in the shower, it will start to flood the room, thank God the room is tile.
The bed is too soft, and the bedspread isn't the cleanest I have ever seen, but I don't see any left over cum on the sheets. I try not to stay here anymore, except when I'm taking up a HONG KONG BG for a short time.
The GOOD NEWS IS Cascades lets you take up to two girls in the room for free, and the guys speak english at the desk. So Here is what I would do, go the the alley pick a SG near Cascades or accross the street, and take her to the room to FUCK. Then go to Hong Kong, have a few beers, recovering, and when ready take a BarGirl from Hong Kong to your room at Cascades, you save $12 for the room, and $5 for the SG, already half your room rate, and guess what? The towel boy doesn't knock on your door.{ that's a savings of $17 dollars, and if you take two Hong Kong chicas to your room at Cascades that's $12 each, for a total savings of $24 dollars! that you would have had to pay if you were not a guess at Cascades.}