I won't deny this is my fav (and best) 1v1 map so i will try not to be biased, so i'll sum it up quickly).
what i agree on what has been said here.
fast, solid (and surprisng depth..quote kyre

).
Surprisingly hard to master, im good here cause i've had so much experience but i've also had a few close calls as well.
possible / bad points.
spamming at times can be a problem, this is due to the wall damage as well at times, can be countered for example going through a tele then back throught it backwards again to fool opponent, but not always possible, can get caught out on the stairs a LOT from floor damage)
a good player here will destroy a not so good opponent..but this is the same on all maps.
maybe a little small, but it keeps the action fast paced however so a bit of a trade-off in that sense (and one of the only good small map with good fast frantic in 1v1 gameplay i can think of)
wall / floor damage ...i've thought about this quite a bit lately, with this turned off i think we'd see a LOT more tactical and skilled games on ALL maps, not just this one, also i don't think nexuiz's maps' implement the wall / floor damage very well. As in it's too easy to use / exploit it a lot of the time.