To be honest, I would aim to spend as little time at BLR as possible. If you're on that early morning flight the airport is a barren and tired place. The roads to get to the airport are pretty clear, so you can be fairly confident of a short ride from the centre. The lounge is serviceable, but full, and full of people who are knackered, fed-up and just want to get on the plane. The minutes tick by like hours...