We decided to stay here to avoid the hassles associated with staying in Venice city center, where you have to park your car outside the city, take a boat to get as close as possible to your hotel.
It was a big mistake.
The hotel is hard to find: no Hilton sign, hidden in a building, no matter if the building is at the very corner of the first block when entering Mestre.
It took 10 minutes of driving around to figure out where to park and where the main entrance was (near the hotel, there is another hotel that is very well indicated).
The area is absolutely (no kidding, I have lived everywhere in the world and there are few spots where I felt that ugly feelilng) not safe; you have to constantly watch your surroundings with a significant population of immigrants and people with unclear intentions.
We initially thought the staff was (very) unfriendly because we had to adapt to local manners (each region has its own behavioral code), but after a few more days in the Veneto region with many positive interactions, we concluded that the Hilton crew was just unfriendly and cold. Let me be clear: they were not impolite, just very unwelcoming.
The hotel is part of the Hilton chain and provides basic Hilton perks, nothing more. If you expect the typical "Hilton" warmth, you are in the wrong place.
Maybe Hilton should invest in this property and provide some hospitality training for the staff.