Stick with the default Google server if you trust Google’s infrastructure. Use a privacy-friendly alternative like Kuketz if you de-Google. Never use a random server from an online forum without vetting.
Some hotels limit free Wi-Fi to 30 minutes by spoofing a captive portal. If you disable detection (with root) and use a MAC changer, your device may avoid the time-out. (Note: This may violate terms of service.) captivemgr apk