I've stayed at the Hipark multiple times and always have had a pleasant experience.
This time though, during a late night check in, I was assigned a room connecting with the one next door, and could hear everything going on in the other room. I requested changing, and was assigned... another connecting room. I gave up at that stage and went to bed.
Night staff did not seem particularly bothered, and what I assume was the reception manager on duty had a go at the receptionist, after letting him make a minor mistake in front of us... not nice.
The guests next door seemingly checked in later than I, and "explored" their room in the middle of the night, which included trying to access our room through the connecting doors. Of course, they couldn't access, but this was disturbing to sleep and perception of safety. This is very easily managed with a sign on the connecting door and clearly communicating this at check in... We fed this back at reception, who dismissed it as "a logical thing to know, and we do with what availability we have as we are sold out".
I disagreed, guests should not be expected to have the building plan in their minds. And sold out or not, communicating this to guests, is easy and helps manage expectations.
Overall, my experience with Hipark staff was disappointing, rude if not testy. They know guests will keep coming due to location, and do not bother to behave professionally when issues are highlighted to them.