I don't see why (other than the fact that it's available and maybe it's temptingly cheap) you would start with a Bassman 100 in order to achieve what you're calling a "bedroom" amp. Unless your bedroom is unusually large, LOL.
I have mentioned these amps many times, so at the risk of being repetitive; I see used Peavey Valveking 112s all the time for $200-$225. This is a 6L6-fired 12" speaker amp with channel switching. This is a very flexible amp you can use on a gig or in the BR. The stock speaker is an astoundingly poor quality Chinese piece of crud, but replace that and you have an actual amp. I have never liked Peavey amps, for the record, though they have their fans. But the value proposition, for $200, is hard to beat. Reverb, no trem. I have a SF Princeton Rev and a SF Del Rev which I modded to dual 6L6-power long ago. The PEEV is 90% as good. And maybe better if you like the channel switching thing.
Peavey also made a predecessor, the Prowler, and a Triumph 60 which are similar. A Valveking, you could buy one for $225 and sell it for $200 in 2 years. I would try for the VK. There are loads of them.
Just a suggestion or two. A Bassman 100 (or 50, with 2 6L6 tubes pulled as silvergun suggested) IMO you are gonna have to crank the heck out of it to get any sort of dirt.