This was our second stay at a ULIV in Mexico City (the first was in January at ULIVE Mexico City a few blocks away) and both have been excellent. They are a solid option for a very reasonable price.
The ONLY thing I wish they had, which they do not, is an in-room safe. It is an odd omission for a place of this type/level. It would make me more comfortable to have a secure spot to leave our passports, extra cash, etc.