2- 2 mins by foot from two centrally located metro stations, several hotels nearby
3 - the centre itself is only 2 little rooms in block-of-flats (???, not quite sure, but it doesn’t look like business centre): the first one is reception, second - testing room for 5-6 (?) working places.
4 - If you need to drink/eat, etc, the only place you can sit is reception area. Also There is no tea or coffee facilities, so take everything with you (in my case Thanks to Sturbucks with its thermo-mugs).
I would consider this test centre again as I liked both place and people.