Speaker Width?

The worst offender in the new photo is the coffee table. Big flat surface so close to the direct sound path is just plain bad.

The ear interprets sounds arriving within 4 to 6 milliseconds of each other as being the same source. Sound travels approximately 1 foot per millisecond. So the rule of thumb is you want at least 6 feet between  straight line distance and the reflected distance.

With that coffee table its probably well under 4 feet. And that thing is huge! Smearing imaging like you won't believe!

What you need is to help your girlfriend out with some better interior decorating ideas! I see a much smaller table, oval, made of say rattan, with maybe a nice round vase on it, slender, or deeply carved wood maybe, anything to break up the surface, and sitting on some nice thick and plush decorative fabric. Lol!

You're getting a lot of good help from everyone already. As you just found even seemingly small moves can make a big improvement, especially when starting from such a low level. 

A couple more seemingly small ideas that should help a lot- that plastic tote box sitting on the right on the coffee table? Even small stuff like that is a surface that reflects sound that ruins imaging. Even that green sofa cushion or whatever it is on the left. If you can't move these maybe play with trying to at least get the stuff ruining the sound to be the same on each side.

Speaking of symmetry, maybe its the photo and maybe that's not the sweet spot but it sure looks cockeyed to me. If it really is as bad as it looks then your biggest bang by far will be to tweak the speakers and the listening spot into as close to perfect symmetry as you can possibly manage.

As others have said some work best pointed right at you, some in a little more, others out a little more. But regardless of whatever that is they all work best when pointed exactly the same and at exactly the same distance. Exactly means exactly. Measure carefully and tweak the speakers until they are pointed as close to perfect symmetry as you can get. Within 1/8" is a good goal. It looks like you are at least a foot off center so this should make a huge difference.

In case you're wondering, all this tweaking will pay big dividends when looking for that new home. Its almost impossible to teach someone what to look for. But once you do it you just know.