Learn Turkish: Her ne kadar kirası pahalı olsa da bu merkezî konumda yaşamak istiyorum. - Even though the rent is expensive, I want to live in this central location.

Her ne kadar acts as an intensifier for the concessive conditional. The phrase olsa da alone already means 'even though it is', but putting her ne kadar at the start of the clause strongly emphasizes the contrast. It frames the whole first half of the sentence to mean 'no matter how much'.

Why did we use 'olsa' instead of attaching the conditional directly to the adjective to make 'pahalıysa da'?

You absolutely can say pahalıysa da. However, it is very common and natural in Turkish to use the helper verb olmak (to be) in these 'even though' structures with adjectives. Here, pahalı olsa da literally means 'even if it is expensive'.

Why is it 'kirası' instead of just the plain noun 'kira'?

The -sı ending is the 3rd-person possessive suffix, meaning 'its'. While in English we just say 'the rent', Turkish prefers to specify that it is the rent of that specific location. It translates literally to 'its rent'.

What does the little hat symbol on the 'î' in 'merkezî' do?

The circumflex (the hat) on merkezî shows a long 'ee' sound. It is part of an older suffix borrowed from Arabic and Persian that turns the noun merkez (center) into the adjective merkezî (central). The hat is kept to clearly distinguish it from the standard Turkish possessive or accusative suffix -i.