I'm quite fussy about location, the more discrete the better.
If it's in a city I want it to be in an apartment with a lift that takes you to the door. I once saw a girl that had the penthouse on the top floor of a 7 storey block. Her's was the only apartment on that floor, so nobody could see where you were going. Perfect.
The other location I like is a secluded house out in the sticks and I've only had this once. It was a bungalow on the outskirts of a village. There were big french windows in the room and the girl didn't even bother putting curtains up. I'd have loved to have been there in the summer, fucking her in the garden.
Locations I hate are hotels, shared houses, bedsits and cul-de-sacs. I saw one lady that lived and worked in a cul-de-sac. She told me all her neighbours knew what was going on and it didn't bother her. So I wasn't being paranoid, they were all staring at me!