Plenty of lovely tapa bars off the main street near the Cathederal, especially this one..
La Taberna del Pintxo Lario[/url]
The closer the Cathederal the more expensive it gets!
Really lively late at night in the gin bars etc.
The Port area is more modern but still filled with bars and restaurants.
The sightseeing bus is very good as you get to see the whole city which is quite large, plus it gives you tokens for free drinks, tapa and entrance to the Classic Car Museum which is great.
Enjoy as it’s a fantastic city, as is Sevilla which is easy and cheap to get to by train.