I absolutely adored my stay at My K House. I'm going to go over my (very few) minor issues off the bat because the rest of this review will be glowing.
My safe was closed/locked when I arrived, and every time I bumped or moved it the alarm went off for about a minute, an annoyance but not a trip ruining experience. The WiFi was also very slow, almost unusable at times, on certain sites (like Google Maps). Last tiny gripe is that the heating zone is only in the main area so if you have the kitchen/bathroom slider shut it can get very cold in there in the winter.
That all aside, this place was AMAZING. A fantastic mix of traditional Japanese lodging with western touches. Washer/Dryer combo in the room (dryer takes a bit but works), fantastic shower/bathroom with separate vanity and toilet. Tatami floors and very cozy. It backs out to a very quiet one way alley and sits over a very cozy bar on site.
Check-in is down the road (1.5 or so blocks) but on check-in they walked me down and explained the property. Keyed entry for main/elevator/room for safety but the part of town it is couldn't be safer.
Comfy beds, amazing Japanese style robes. I stayed 5 nights over Christmas and loved every one of them. Very walkable to two train stations, Nishiki Market, Gion, and a lot of Kyoto within 15-20 minutes.
The only thing I'd note is that if you speak next to zero Japanese this is just off the main tourist areas and is more traditional, so learn some basic words to help a ton!