Small Bedroom Tube Amp

Dayens Ampino. It will give you anything an inexpensive tube amp will without the hassle of tubes. It's also tiny in size and fits your application perfectly. It's the closest to tube sound I've found yet in inexpensive solid state. 

https://www.audiothesis.com/product-page/dayens-ampino-integrated-amplifier

It depends on how you're planning to use it and what sources you'll be using. This may sound like a completely different option but in my opinion, the simplest approach for a bedroom system is a Bluesound Sound Bar. It sounds great, and its an all-in-one system allowing wireless streaming of high quality content from many popular cloud music content services, e.g., Tidal, Spotify, etc. And the best part is you can control it while lying down on your bed. Look it up.

"  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?