Small Bedroom Tube Amp

"  It depends on how you're planning to use it"

the OP said :

"   I want to mellow out music when putting the little one to sleep."  

@freediver "Jolida,something like the Glass FX Tube Integrated or the small Hybrid,forget the model..."

Excellent advice. I’d recommend the baby 102 EL84 integrated, or taking up step up their product line, the 202 EL34 integrated. Both operate reliably, look and sound terrific, will serve you well, and if the day comes when you want to move in a different direction, will sell promptly and provide high resale value

Thanks everyone for the great options!  I will dig a bit deeper into the recommendations.

Any thoughts on small bookshelf sensitive speakers that would pair low powered amps? 

The Peachtree amps, as mentioned by uberwaltz, are a good option but they are not tube amps.

There are many good, inexpensive tube amps available that are certainly more than good enough for bedroom use.  I would suggest that you take a look at the *original* Sophia Electric Baby Amplifier.  It was a killer product that was designed by a U.S.-based audio firm (although the amp was made in Hong Kong).  These are available used for around $350 and I doubt that there there is a better performing tube amp at that price.  Replacement tube sets are very inexpensive, these units are built like a tank and they are easily modified/upgraded if you are so inclined.  I used one in my office for years.

Correct not a tube amp as such but I guess the right term is they use a tube "buffer" in the preamp section.
Gives some of the sound of tubes without the cost and complication of a full tube array.
I found the sq on my Nova to be a lot richer and fuller with more bass than the previous admitedly older class d integrated