ah...
well that dendrobium phalaenopsis may do ok if you keep it drier, and grow it outside in summer months I'd imagine...
there are plenty of cooler growing plants that i wish I could grow! so you have options, but keeping humidity relatively high (My guess is that humidity can be a challenge because of interior climate control systems?) and maintaining light and light duration will also be a goal for you to grow orchids well...
Setting up artificial light to extend light hours or use of high intensity light bulbs can help... as well as setting up simple enclosures to up humidity can also work, even small setups around windows can be fun and easy... and with small setups you can join the mini orchid camp (that's my thing) and there are a lot of orchids that can fit in small growing case setups.
A blog i've looked at over the years is this:
orchidkarma
She grows in sweden quite successfully and details her various grow set ups. I think it could be a great resource for you.
She grows a lot of cool plants including a group of orchids call pleurothallids which included the masdevallia you have. (that one can do well for you if you can keep humidity high or it)
As far as easier orchids for cooler windowsills without extra humidity... i'd recommend miniature cattleyas, paphiopedilums, phalaenopsis hybrids, smaller growing zygopetalums, miltoniopsis hybrids... should do reasonably well. When you're ready to get into more specialized species or hybrids, we can all certainly recommend some when you get to that point.
In general however, setting up artificial lights in winter to extend daylight hours will help these, and any orchids.
Just catching the last post about the miniature dendrobiums... i wouldn't recommend those for the novice grower, they're pretty challenging overall to grow... although some are somewhat easy...