Stayed here for just 1 night before we flew out of New Chitose Airport with our 2 kids. I was emailed an online check in form beforehand, completed it, and once I got to the unmanned reception, it was an easy process to scan the QR code there and get the door codes to enter the building and our apartment. The apartment itself was way more spacious than I expected, with 2 Queen beds in one room (that had its own ensuite shower) and an additional Queen in a separate room. The main bathroom had a shower and Japanese style tub complete with cover. There was only one toilet in the whole apartment though, probably would've been better to have more toilets and fewer showers? Kitchen seemed extremely well provisioned, not that we cooked here. There was even a rice cooker. Decor was clearly very modern and the whole place was super clean.
The main downside of this place is the location if you don't have a car. We found lugging our suitcases from Minami-Chitose Station through the iced over footpaths far and difficult, and the only shops nearby is the outlet mall, which didn't have many food options open when we were there. There wasn't even a convenience store nearby! It really felt like the middle of nowhere compared to everywhere else we'd stayed in Japan. There were some instructions to order food & grocery delivery inside the apartment but we didn't try it. Rate was great given the quality of the apartment htough. Would only recommend people stay here if they have a car.