I stayed at Shimmy's place while I was in town for a conference. The apartment is well located. It's less than 10 mins to Oakland Convention Center. There's a Wholefoods and 7 Eleven within 5 mins walking distance. You're also really near to Webster Street which has various food and drink spots around including MUA Oakland, a bar and restaurant with a great vibe, mood lighting and hip hop/urban music playing. It is a little pricey and there's a $20 minimum spend but I highly recommend it for a night out.
Shimmy's apartment is a good pick if you're looking for a simple, comfortable stay. It's perfect for a solo traveller but would easily accommodate a couple quite easily. The kitchen is equipped with the necessary utensils to cook meals and you've got a dining table. The living room also has a TV, but beware the cable package is super basic. For that reason, it didn't make use of it so I suggest you bring a laptop and watch Netflix instead.
All in all, it was a comfortable stay with no frills. Highly recommended if you're looking for a central base while staying in Oakland.