Nouns ending in -al, -el, -il, -ol, or -eul are usually masculine.
The whole family: -al, -el, -il, -ol, -eul. All masculine.
Is hôtel masculine or feminine?
l'hôtel
The rule behind it
96.5% of -al / -el / -il / -ol / -eul nouns are masculine
In context
Ils arrivèrent à l'hôtel à quatre heures.
At four o'clock, they arrived at the hotel.
J'envisage de rester à l'hôtel Hillside.
I'm planning to stay at the Hillside Hotel.
Il gagne sa vie comme garçon d'hôtel.
He earns his living as a hotel boy.