I have friends who are so devoted to their Peleton than they have one in their beach house too. It doesn’t hold great appeal to me, but I don’t really like spin classes at the gym either. I prefer to bike on a real bike outside. With that said, cycling can be hard on the back and neck, and it sounds like your exercise program needs to be highly attuned to that. The rowing machine might be better. Does your PT have recommendations?
What will work for you is what you like to do and what will motivate you. If it’s having signed up for a class or session with your trainer, the format of Peleton could work. Then again, many gyms have on-demand classes as well as streaming options, and maybe mixing it with in person classes might keep it interesting for longer.
Good luck - wishing you a rapid recovery!