So, this place is quite OK in terms of facilities - quite a new hotel, well decorated. However, I have never felt more unwelcome to a hotel than at the Hyatt Place in Managua. Had several small issues: no proper check in, long waiting for service, false charges on my credit card (I guess staff is still in training), but never had a friendly encounter throughout my stay of 3 days. When I left, I did not even get a "good bye".
On another topic: the breakfast did not change much during my stay. I understand it's complimentary for all guests, but if you stay longer than 2 days (as I did) it gets boring.