Additional to the other answers: You might also look at the area where you are booking. I know of areas in west Central Europe where you would be happy to get a stable 3Mbit/s connection. The connection is between 0.5 and 1.5 MBit/s and fails every other weeks for hours and all providers think it is not worth repairing/improving.
At least in many European countries providers allow you check the maximum speed available at a specific adress online with only giving them the adress. These data are not always accurate and does not mean the maximum speed was ordered but can give you a warning signal if it shows no or slow possible internet connection.
When you are already in this situation and LTE also doesn't satisfy your need, you are very limited. Options are looking for an internet cafe or other businesses/private people providing WiFi/internet like some big shopping center, restaurantes or a WiFi sharing community like https://freifunk.net/en/ .