Twin bed or queen. Leave it made up or make it at night. Apartment sized fridge or half-sized. Lots of decisions and trade offs in B. Don’t completely discount wet baths as boaters have lived with them for years. It’s a small space so you need to see what will fit the two of you (+dog). We downsized from a 36 foot with a slide-out to a B to change how we travel with two Labs and a cat. It just took a bit of organizing :B. BTW, a B+ is really a C and almost 2 feet wider than a B, and that matters when you decide to park.
Dave