Hi patrickza,
I love what you've done so far. I've just returned from my own tiny place and am reminded once again how cool it is to have a perfect jewel box of one's own. I don't rent mine out, but do lend it to friends on occasion. One of those times is coming up so I needed to "deep clean" at the end of my stay. Took about twenty minutes to nuke everything, including changing the linens. Fun.
I love the blue tile and that everything looks so neat and clean. If I may, a few very gentle suggestions, as I am totally in awe of what you've done. Some thoughts are repeats, some are new. Feel free to ignore or implement, as best suits you.
1. Is there underbed storage? If not, it might be worth considering at some point. If I had some extra dollars, I'd build a hinged platform under the mattress with hydraulic shocks to make lifting it a breeze. Having a place for linens and off-season items that's easy to get to but out of sight would really be a plus. If you build it, you could even figure out some kind of locking mechanism, so you could store personal things a little more securely.
2. A long, high shelf on at least one wall might also be useful.
3. The gaps on the far left and right sides of the kitchen are screaming to be put to good use. At one time, folding chairs and small table were in the mix. The right ones might tuck nicely into those spaces and increase the unit's versatility.
4. A hook or two to get the dish drying rack off the counter when it's not in use might also be handy.
Thanks for the update and please post more photos as the details are finalized. So cool to see this go from idea to reality!
~ Diane