BassAgent

Bath is a lovely place. Vintage n' rare guitars shop - if you want to look at old instruments you can't afford lol.
Nice little cafe on Pultney bridge (you have to at least go & look at the bridge when in Bath - it's the law ha ha).
So many nice buildings & pretty places. The Roman baths are quite expensive to visit these days, but worth a visit, especially if you're not often in the area.

Re Bristol, I like the whole area around St. Nicholas's market. Some great street food in the market. Some cracking pubs in the city. I like the Strawberry Thief close to the market. Really nice Belgian beers - but it's not cheap. Or there's a cracking micro brewery near Temple Meads railway station, situated underneath a railway viaduct. 
"Little Martha's Brewery" 
https://www.bristolpost.co.uk/whats-on/food-drink/new-bristol-pub-open-disused-5011091

I went to check out the SS Great Britain after the Bristol Guitar show last year, but the parking was ridiculously expensive so I didn't stay.