Hotel guest returns to room and finds a sleeping seal

[Catherine]

A hotel guest in the Netherlands returned to her room and found a Grey Seal napping by her bed. Rather than disturb the seal, she spoke to the Front desk. They called the Zeeland Animal Welfare Foundation. They came and safely removed the seal and relocated it to somewhere more suitable for a seal.

https://people.com/hotel-guest-return-to...ng-8787238

Apparently Grey Seals like to take naps in odd places. I can see the seal enjoying a nap in a hotel room, but how did the seal get in?