I wouldn’t put much hope in a Wi-Fi extender, as that needs to be mounted closer to a stronger signal source.
Other options: MiFi or Jetpack for cellular, or satellite systems such as Starlink Roam, a Wi-Fi travel router if the lodging has a wired Ethernet connection, or ask the front desk for a room with better Wi-Fi coverage.
Satellite gear requires an external location with adequate satellite coverage for the antenna.
MiFi and Jetpack gear requires cellular coverage.
And, of course, a cellular-capable iPad is a possibility if cellular coverage is adequate.
Yes, more than a few of the hotels I’ve been in have had marginal network installations at best, failing gear, or interference from folks running MiFi, Jetpack, Starlink, or other local and non-coordinated Wi-Fi networking gear.