Recommendations for speakers in a much smaller listening room.

I'll keep i simple. You need a speaker that is pretty much full range, but small enough to be properly placed. Anything the 2X8" woofers needs to be to fat into your room. 2X6" woofers can usually be placed closer to the rear walls without getting boomy. Dual-rear ports allow 4 separate bass tuning settings: both ports open or closed, upper port closed lower port open, and vice versa. I was amazed at how much dialing in could be done that way. 

So, Id be looking for Monitor Audio Silver 300 S7, KEF R5.l Meta, Or a good 2.5 way 6.5" design. If your inclined to use the long wall, Maggie 1.7s could work, but they'll chew up a lot of floor space. What I would avoid is anything with too much woofer 2x8" would easily over power the room, and most mini-monitors, they are nearfield-voiced and will tend to sound too small in that room. My experience with KEF LS-50s. Loved them, except they just sounded lost and small -until I got them into a small 8x12 room, then it was "Oh ... that's what they can do."  Revel, Golden Ear, and Mertin Logan have very different  approaches, but have some interesting speakers in your range - I'd catch a listen to the M-L Electromotion ESL and ESL-X. Exceptional midrange and detail, might be a little bass light for some. 

Acoustic Energy AE509s

Lyngdorf FR-2s - can be put up against the wall saving floor space.

Another vote for the Harbeth P3esr. Had the M30.2 and loved it but they are around 5k$. The Harbeth P3esr is the best value for the price IMHO . And you need to leave room for good stands. The Ton Trager are second to none to match Harbeth if you can find them second hand. Another option to explore is the Dynaudio special 40. An excellent well balanced speaker. Good luck and keep us posted.

Another thought on smaller room speakers. Let’s set the high bar. Cost no object smaller room speakers. Id offer these two: The Steheim Two.Five at $23,500 per pair and the Josep Audio Perspective 2 Graphene at $16,999 per pair.  Oth are specifi6designed for smaller rooms, both are compact floor standers whose foot print is no bigger than a mini-monitor on a stand, and most interesting, both are 2.5 way designs - 2 smaller woofers run in parallel, rolling off the lower woofer early, at around the baffle step frequency. The smaller drivers also can be crossed over higher before off -axis beaming is an issue, and tweeters don't have to cross over so low as to compromise their power handling.l The advantages are extended bass and greater woofer area (for bass ’slam’) in a small cabinet, without compromising the midrange coherency, a simpler overall design and simpler crossover compared to a 3-way, which means less crossover insertion loss, fewer phase anomalies and greater ’livliness’ than can be achieved in a compact 3-way. 

Both the example speakers given are way above your (and most peoples!) price range, but using those design characteristics might give you some good clues of what to be looking for. For any given system, the first 90% of possible performance is achievable for 10% of the cost of the last 10% of performance. 

Hello @backwash 

your room is something close to mine (13x23). If you are willing to listen near Field, then i highly recommend the Falcon Gold Badge. LS3/5a and supplement it with sub. This is my reference setup, powered by Pass Labs Xa-25 OR my Audio Note Clone 845 Tube Power amps. I just need to say that this speakers "disappear" into space and music just flows from the front of the room. This speakers makes the rear wall disappear with the correct recordings. Its only disadvantage is that it does NOT play LOUD.  the loudest i played it was about 90 to 95 DB. This speakers generate the correct tone and timbre.  I can go one and on, but seek out Herb Reichert (Stereophile) for his comments

I suggest that you give it a try