Steps shouldn't be an issue with shoulder surgery.
While full-timing we went through two knee replacements, a shoulder replacement surgery, cancer, gallbladder, hernia surgeries.
We felt it was so easy to recuperate in small quarters. Lots of things to hold onto to get around. The bathroom wasn't an issue. With the shoulder I did sleep in the recliner often. Laying flat didn't feel good.
Best of luck to you!!