Recommend a small tube amp for bedroom use?

If you don't mind EL 84 tubes, the little Jolida 102B integrated is a great little amp with a very small footprint and at 19 watts per channel can drive a variety of small, inefficient if necessary, speakers. You won't need a preamp and can find them on Audiogon used for $300-$400. I am currently driving Spendor S 3/5s with one in a second system with great results.

Look at the Italian brand Synthesis. Very compact and nice looking. Nice sounding too, though not cheap. Also, it is pushpull (I recall one model used EL84s).

Sophia Baby?