I've used A Scooter 4 U for my past 4 trips. The owner, Jerry, can be a bit abrupt at times, but they've always been very responsive with any questions I've had. They deliver the scooter to your hotel or meet you if your hotel doesn't allow them to leave the scooter there. They've always been on time and from my research, have some of the cheapest prices in the area for multiple days. I've never had the scooter run low on battery and charged it easily every night in my hotel.
Call around if you have any specific needs. Most of the scooter rentals will deliver the scooter to your hotel, which I find more convenient that arranging for pick up and drop off.