The Durst M60x series is a good 35mm to 6x6 enlarger.
I use the M600, and it packs away very nicely in its box, so I can store it between uses.
I print in a "small" bathroom, so I know what you mean.

I also have 2 Omega 6x7 enlargers, and they do NOT pack away as well as the Durst. The box is MUCH larger and thus difficult to handle.