Check-in user-experience for first-timers is terrible, at least when booking via a third party (like hotels.com). You get an email which asks for a travel ID for the self check-in. I had none as I booked via hotels.com, and I did not get the information that I can check-in directly in front of the hotel WITHOUT any travel ID, just my name. It took me a lot of time on the phone, hearing recorded informations (but not useful for my case) and trying to reach any human who told me I can check-in in front of the hotel.
In the morning I got the information from a very uninterested hotel employee, that there is no breakfast, as nobody has pre-ordered one. So they do not open the kitchen for breakfast.
The only positive experience: The room itself was ok (when you are happy to get there).
Referring to the mk hotel homepage where they speak about a "modern service concept supported by passionate employees": Please use some professional support to design your (digital) customer communication and interface.