Whilst the air conditioning is being upgraded in the check in hall in T1 the airport as a whole is big enough spacious enough and friendly enough. Food and drink/food is expensive - but not too much (same old all over the world high prices) We were out of the airport in our hire car in 50 mins from touch down. Car hire offices were 50 yards from the terminal and on return had friendly check in staff for our delayed flight. It's ok. It's no architectural gem but it does the job efficiently and quickly which is what you want.