Попробуйте использовать следующий код:
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait as wait
from selenium.webdriver.support import expected_conditions as EC
from selenium import webdriver
driver = webdriver.Chrome()
driver.get("https://www.phptravels.net/m-hotels")
wait(driver, 10).until(EC.element_to_be_clickable((By.LINK_TEXT, "Search by Hotel or City Name"))).click()
wait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#select2-drop .select2-input"))).send_keys("Test")