To remove wallpaper he always used vinegar and hot water.

Here is what I would do....saturate the area with vinegar then come back with baking soda on top of that.

Vinegar and water does work but it's labor intensive.

I’m of the firm opinion that you’ll get more flies with sugar than with vinegar. 

@Mindy Jensen,I would got to a big lots/dollar store and buy a couple of power toothbrushes. or get a good round brush into a longer bolt into your drill and have a go. or attach a stiff brush to a multitool/vibrating sander (i know you have at least one of those in your collection :-P )before bleach, first try peroxide + baking soda (or any oxy type of booster) + hot wateryou could try steam cleaning (not sure of effects of steam on porous travertine)source: whole tiled basement with former dirty owners and dogs. i didn't have travertine so i used some vinegar for boost. pretty clean after 3 moping-sessions.

But here are some tips on how to get rid of dead person smell: - Place an open box of baking soda in each room overnight - Clean all surfaces with vinegar and water solution (one part vinegar to ten parts water) - Open all windows and let air dry out for several days - Put bowls of white distilled vinegar around the house for three days.- If none of these tips work, call a professional cleaning company. 

They would also put bowls of white vinegar around the house, and the smell would be gone very quickly. 

“You can catch more flies with honey than with vinegar”If that doesn’t work and you don’t get your family in the house, then maybe in the “bigger picture” you weren’t supposed to be in the house.

If it was me, I would shampoo the carpet with ammonia and then vinegar, I would wipe down all the hard surfaces with ammonia and then vinegar, ceiling tiles I would either repaint or replace. 

I have scheduled sandblasting, then boric acid and vinegar spray followed by paint wood joists subfloor below, and Drylok supreme along the foundation wall.