It's an online-only check in, but you need to find some other way for people to supply their credit card details for deposit holds. Supplying them over the phone to someone I've never met did not seem secure to me. The only other option was email, even less secure.
The place itself is OK, quirky, different, comfy bed, good shower and superb toiletries. The digital door locks were annoying, you close the door behind you and it locks automatically - after a while - meaning that, when leaving for the evening, you need to close the door and stand around like a lemon, waiting for the auto-lock to kick in.
But these are minor faults, we enjoyed our stay overall, apart from the absence of staff.