The Meloneras area of Gran Canaria is quite new and therefore very disability friendly with ramps everywhere. A little pricey compared to the rest of Gran Canaria but so much nicer. The long prom was totally flat and the nearby shopping centres were fully accessible too.
We stayed at the Gran Hotel Lopesan Costa Meloneras which was ramped throughout. The lifts are big enough to take your mobility scooter up to your room, which was roomy enough for it not to be in the way. The grounds of the hotel are huge and very beautiful and completely on the flat with smooth paths everywhere for easy pushing of chairs etc. Staff very helpful. There was nowhere in the complex which wasn't accessible and lots of benches to sit on etc.
Bathrooms had both a walk in shower (2 inch border to step over) and a bath. Nothing to hold onto in the shower though so we used the bath. They do have 6 disabled rooms though which apparently have the full works so best to book one of them if bathing is a difficulty for you.
Fabulous hotel especially if you're over 40 (not much in Meloneras for families though) Entertainment at night was good too so no need to go father afield if you didn't want to although the few bars nearby were accessible too.
There are a number of restaurants along the prom but some are a little difficult to access due to some weirdly places steps. We went to Maximillians a lot which was totally accessible (we parked the scooter right next to our table) great food and great service. There are a few restaurants and bars beside the IFA hotel in a more basic complex with some small shops. This whole area was ramped too, along with a craft market beside the lighthouse (also ramped).
Best place we've been to yet accessibilty-wise.