Unfortunately the Hilton Como is down at the end of the lake nearest Milan, and so is at the much less beautiful end of the lake. It is a reasonable distance by bus or on foot to the boat docks. Be careful with the boat docks. Unlike at other towns and villages around the lake which only have one dock shared by different boats, at the south end of the lake all the docks are separate and on different piers along the edge of the lake. I have before now had to run from the slow boat dock (my fav boat) to the hydrofoil dock which was a fair distance away. Be sure you know which boat you want, and leave enough time.
The Hilton, in common with most European Hiltons, charges €26.50 per day to park.
The way to see the lake and beautiful villages is by boat, especially the slow boat, especially as you get to the nice part towards the midpoint of the lake, on the west side and then over towards Bellagio and the beautiful village of Varenna.
Cars are useless in that area. The houses and estates have high walls so you can't see either them or the lake, and most towns and villages have ZTLs. Don't enter those under penalty of a high fine. The ZTLs up the lake don't have the big traffic lights and big signs like in the larger Italian cities, sometimes it is only marked by a small sign fairly high up the wall and on a small sign (like Varenna). Still patrolled by both officers and cameras.
There is a car ferry Varenna, Bellagio, Menaggio, but the rest of the lake is passenger boats only.
I expect that you may be either staying on points, or perhaps the Hilton was suggested by a travel agent, but if not and you can look further up the lake for your hotel you may well be more satisfied with your lake Como experience - a really beautiful place as you head up the lake.