Manuela is flexible enough to allow me check in a bit early and check out a bit late.
She is a very friendly host who received me in person and gave lots of local travel info. She does not speak English but I did not have problem communicating with her with the translation app. There is also another English teacher staying in the flat who can help if needed.
The flat is within walking distance to many sightseeing spots and close enough to bus stops if you prefer taking them. It is also close to the Seville SJ train station - around 10min walk with luggage.