Have you visited Seville during Semana Santa (Holy Week)? What are your thoughts?

My girlfriend and I are planning a last minute trip to a few cities in Portugal and Seville, Spain. We realized that the week we will be in Seville is Semana Santa (Holy Week). We liked the idea of going to Seville with it being a smaller Spanish city (smaller than Madrid and Barcelona, I mean) with great museums, history, food, and a little more relaxed.

Now we are wondering if going during this specific week will be too overcrowded for us to do the regular touristy stuff there like visiting Plaza de España or the Real Alcazar de Sevilla.

What are your thoughts? Do you have any tips or tricks for getting around during this time?

Alternatively, if this isn’t the best time to be there for what we are looking for, are there any other suggestions on where we should go? We are traveling from Lisbon to Spain and are looking for someplace more southern. We are flying out of Madrid, so we are looking for somewhere that would be reasonably easy to travel there for our flight back.