3rd time staying with the Double Tree by Hilton Lisbon - Fontana Park, the experience is moderate. Not very good but still ok.
The location of the hotel is good. My room was on the 1st Floor and you could find a connection door inside. I am not sure it's because of it, the soundproofing is not good that i can hear what the next door doing at night. The check-in wasn't so smooth but it's ok as i am booking from 3rd party online which took a bit more time for them.