I'd say it depends on a few factors. We didn't hire a guide and had relatively little issue getting ourselves around to the sites we wanted to check out (they have maps at the visitor centers that are quite helpful). We also availed ourselves of the audio tours (via handheld players/headsets) at the Citadel (and underground Crusader City), which was great. I forget if we paid extra for that or if it was included in the cost of admission. If you want more history as you're walking between the sites, and then at some of the sites that don't have, say, audio guides, I'm sure it'd be good to have a guide. Or if you want to be able to get around without any problems at all (i.e., getting "lost"), having a guide would be useful. If you're keen to do things on your own and don't mind looking up some info on your own before or after visiting, I would say you'd be find without a guide. As for the sites being wheelchair accessible, I'm afraid I can't help you there as I don't remember. Good luck, and enjoy Akko!

לא סגור כלום, להיפך יום ראשון הוא יום מאד רגוע ,אין הרבה טיילים יחסית

Suggest to park outside the old town and walk to the center. Much more convenient.

Jazeker, vooral het museum (citadel) met ondergrondse gangen etc. is zeer de moeite waard om te bezoeken.

It is old and the pavements are not good. I would advise a carrier.

רצוי להגיע באמצע השבוע כי בסופ"ש עמוס והרבה פחות נעים.

I would think that there are plenty of tours available, look on trip advisor. It's not far from Haifa, you can get a bus or sherut from Haifa bus station.Do go though,it's got a lot of history and some nice walks along the walls.

All the sites are open on Saturday as are the markets and restaurants. The taxis costs between 60 and 100 shekels depending on who you get as taxis don't normally run on Saturdays during the day only in the evenings. Transportation is difficult to find on Saturdays. Could you maybe arrange to rent a car for the day? It'll make life easier and then you could go to Rosh Hanikra too. It is on the Lebanese border and you could take the cable car down to the Grottos.

There is a Sherut Taxi service just outside the port on Aatzmaut Street that goes to Akko, the cost is about 15 shekel, one way. The duration of the trip is about 20-30 minutes depending the traffic. Get off at the stop near the District court and its a 5 minutes walk to enter from the entrance near the sea via Yehoshafat street.