Boiled meat tastes bad because you’re not adding oil/butter. You’re also not applying enough direct heat (plus keeping it too moist) to create the maillard reaction that is needed for a crust to form

The water doesn’t make a difference. What’s killing the bacteria is the heat. The water just changes the method of heat transfer. But as others have already said, killing the bacteria may not necessarily make it safe

None of those are mammals…

The room seems rather bleak at the moment with only gray and black colors and no decoration.

From an organization standpoint consider: getting some hangers for your clothes, hanging a curtain in front of the closet (if you dont want people to see your clothes), getting a bed frame, a bedside table. Have a very basic set of cleaning supplies (windex, paper towels, a swiffer for the floor)

Add some color to the room with a rug and/or throw blanket, and get a lamp if the room feels dark

Add things to the room that will bring you comfort when you walk in - some options are plants (can be fake to avoid watering), photos of family/friends/pets, posters or artwork, books/bookshelf, a television to watch from bed