I chose my Tannoy 5As on the basis of reading as many reviews as possible and a magazine "shootout" where they trounced monitors nearly twice their price in a blind test. But THE most convincing aspects for me were...
1)I don't remember a time when Tannoy were not around!
2) They have a very good reputation and tho' the 5As are budget monitors I am sure they would not sell anything to besmirch that reputation?
3)They largely stick to speakers, i.e. they don't also sell every other audio gimcrack you can think of!
Ok, they won't go very low or very loud but for my son's "classical" and jazz leanings, perfek!
OP, "Room treatment". If you have the typical projjy bedroom "studio" say sub 1500cu ft you will not have room for much in the way of bass trapping (I have 1222cu ft and have very little and even less space!) so about the best you can do is attend to "early reflections" to get a good stereo image. Look up the Studio SOS articles in Studio Sound.
Dave.