How do I refresh the wall without painting?

Add a removable wallpaper. When you leave just take it down.

There is removable contact paper. Or you could use Command strips to hang pictures.

Hello there,

Add picture or a gallery of art or photos. Add a large Mirror or clock.

You can use removable wallpaper or attach fabric to the walls with liquid starch.

You can always lightly wash the walls, but do it in a small spot first. Hopefully the owner used a washable paint.

Hang artwork! Or something like a fabric tapestry. :)

Here's a post that might help - https://www.mybedframes.co.uk/blog/14-alternative-ways-to-decorate-walls-without-paint/

Hello a large piece of artwork can be a nice transformation. Thrift stores garage sales consignment shops I’ll have artwork and wonderful frames for pennies on the dollar. There’s even the situation where you can take a stretch canvas art piece prime and repaint it does it your own decor.

Salma: Wall decals may be a good solution!

https://www.amazon.com/s?k=wall+decals&crid=242YVLKCEJQPD&sprefix=wall+decals%2Caps%2C175&ref=nb_sb_ss_i_1_11

Add a sheet or shower curtain on a wooden frame. Thin strips of wood with braces across the middle (a few if frame is large) then staple onto the frame in the back. You can also decorate with washi tape you can peel off.

The type of lighting in the room can affect how the paint color on the walls is perceived, or what color it appears to be.

Incandescent light gives off a murky yellowy tone, florescent a greenish tone, with both giving off a dingy light if the bulbs are insufficient wattage.

One of the fastest and easiest ways of adding new life to any room is to

replace the light bulbs with LED lightbulbs.

LED light is clean, clear, and shadowless. There are choices within LED lighting such as warm to cool. Examples below.

You could add removable wallpaper!

When was the last time that the wall has been thoroughly washed?

Removing all glass portions of light fixtures and giving them a good wash with hot water can also brighten up a room.

Sometimes the difference between the 'before' and 'after' with only a little time and elbow grease, can be huge.

You're welcome.

You didn't say what they are (paneling, sheetrock, wallpaper, tile, or other) so this is a general stab at the issue. First, clean thoroughly. If you don't like the way they look you can add removable wall paper, tapestries, large mirror (which will also brighten the room), or large pictures.

Try hanging a large tapestry like these: https://amzn.to/3f8ze43

You could actually wash them that will freshen them up and clean them

If they are looking dirty you could use a Mr. Clean magic eraser to scrub down the walls and remove stains.

Hi Salma: Is it possible that you can repaint the SAME colour? Check with your landlord and see if that's acceptable. If so, get it in writing, signed and dated by you both and take before and after pictures. I wouldn't think he/she would object to painting the same colour. Remember, a no is better than a missed yes :) Good luck