Overall, a great experience. The staff were all wonderful, and helped/suffered an English-heavy traveller like me. Boppard is a nice small town with welcoming people and some great restaurants. The breakfast at garni Günther was a decent buffet spread. Same thing every morning, but the amount of options available was commendable. The only issue I encountered was no hot water in the shower for a couple days, but they fixed ASAP as soon as they knew about it. A short commute by regional rail or bus to Koblenz, which is wild during Karneval, but has great shopping and restaurants for tourists.
The view at garni Günther from the second floor balcony down the Rhein was spectacular. Room was spacious, (by Europe standards) bathroom was not (but that is Europe hotels in general). Cleaned and straightened every day. Tons of shelf/cupboard space. Really appreciated the kind service with the hotel staff. Would recommend for tourists, solo travelers and couples/families for getaways or low-key holiday.