I’ve been to Liverpool 7 times. The city centre is very compact, so staying anywhere in the centre is fine. How many people is ‘we?’
Are you looking for Beatles sights? For those, I can recommend tours and if you want inside the Beatles childhood homes, a tour is required, there’s no general public admission.
If no interest in the Beatles, then you won’t need an organised tour. The city centre is very walkable. There’s plenty to see, most of the museums are located on the Albert Dock and they’re all free except for the Beatles Story . The Museum of Liverpool is amazing. I happen to like Tate Liverpool, it’s mostly modern and contemporary art. I haven’t been to the Museum of Slavery, I’ve heard it’s excellent from my Liverpudlian friends, it’s just too hard of a topic for me to handle on a vacation. You can also take the Ferry across the Mersey. There’s a captured U Boat you can see.
Away from the Albert Dock, there’s the World Class Walker Art Gallery. There are two cathedrals: each very different. The Anglican cathedral is traditional while the Roman Catholic Cathedral is a very interesting modern cathedral. You may not like it, but you’ll never forget it. There’s also the bombed out church, a reminder of WW II hell, a church with its walls standing but the interior gone.
Dale Street is an excellent place for real ale at prices that’ll make you smile compared to London prices.
Liverpool One is an outdoor shopping area with major chain stores and restaurants. Rococo coffee is also there for an excellent local coffeehouse.
Bold street is full of more independent shops
There’s also the two football stadiums. Never seen Everton but Anfield is amazing.
Mathew Street is ground zero for Beatles fans, but is also fun for live music, not all of it is Beatles related.
Anyway, ask away with further questions.