Choose your answer: is the following review positive or negative?

I've been to Oyshi on several occasions. The restaurant has been really hit or miss. The first time I went with my fiance and we sat near the window, close to the sushi bar. The quality was good and the service was prompt and friendly. The second time we went we were put in the far corner, probably as far away from the sushi bar as you can get. The quality was still there but the service was terrible. We felt forgotten being so far away and it took a long time to get our first order. When doing AYCE we usually do a first round then inevitably get a second round. With the amount of time it took for the first, we didn't even want to wait for a second round. We left full from the tasty sushi, but disappointed with the service. This last time we went was for the AYCE lunch. We sat close to the sushi bar, but it didn't matter. We ordered Miso and Edamame to start. The miso was brought very quickly, but we waited easily 30 minutes for our edamame. The waitress came back during our waiting to take our order for sushi. We placed our order and also asked about or edamame. She clearly forgot judging by her reaction. The sushi came before our edamame and the quality was poor. The albacore was mangled on the rice and didn't taste fresh. Same with the Salmon. The worst part about the last experience is that during our time waiting for edamame and sushi, we saw our waitress through the curtain in the kitchen eating food. Restaurant no-no 101. I don't plan on returning. It's disappointing because I like the atmosphere, their selection on their menu (AYCE even includes oysters on the half-shell and Uni!) On to better places.

pick from the following.
(a). negative.
(b). positive.
(a).