There are a huge number of hire boats from below Caen Hill to Bath, so the issue you will have is other hire boats. You will find moorings at Bradford and Bathampton and if you arrive early afternoon at the top of Bath, so plan to go onto the river and moor at Avon Steet. Also do some of the river and return to Bath.
If you don't like other boats you'll hate it, and you will probably get shouted at to slow down regardless of how slow you go. However if you enjoy looking at boats that are different in many unique ways and mixing it with other boats (I.e. like the Llangollen in summer) you will enjoy it. Enjoy.