Secrets Hideaway
Secret's Hideaway is a great option if you're looking for a modern and romantic hotel with a spacious shower. Person B mentions that it has a shower that comfortably fits two people, making it a perfect fit for couples.
While it may be a bit more luxurious than what you're looking for, it's definitely worth considering if you want to splurge a bit. Keep in mind that it's a boutique hotel, so it's not a massive chain hotel, but rather a smaller, more intimate experience.