Overall, we were highly satisfied with our experience on this self guided bike trip. The scenery was great, starting in the (relatively cooler) mountain town of Vytina, cycling down into Tripoli. We enjoyed the day trip to the Kapsia Caves. The ride from Tripoli to Astros was scenic, with a very noticeable flora change as we dropped over the pass and started to head down to the (much warmer) seaside. The dip in the Aegean to cool off after the day's ride was exultant. The ride along the coast to Nafplio was beautiful, and we enjoyed the ancient sights along the way (Agros). Nafplio is a charming town, absolutely worth staging out of for the final few days.
Pluses: Hotel and staff in Vytina, Tripoli, Nafplio. The ancient sights to visit got better and better with each day (Argos, Mycenea, Epidaurus). The charming towns, intimate small lanes and shops, late night restaurants out in the squares or along pedestrian streets in Paralion Astros, Vytina, Nafplio were a delight. Dips to cool off in the Aegean a joy.
We found the Greeks, those with the local tour company, the shuttle pick up and drop off, the Hotels and well, just about everywhere along the way, to be friendly and eager to engage and to help. Also, the relative cost of goods, meals, etc. were quite affordable.
Specific to the bike tour company...friendly and prompt pick up at the airport, and the GPS units provided (50 EURO refunded deposit) had each days routes preloaded and worked out quite well (given the routing had a lot of zigs and zags at times, I don't think we'd have been able to follow the route with a paper map/sticker process common to other bike company rides). Baggage transfers went without a hitch. Very accommodating for our request to switch bike types at the start of the ride.
As for 'room for improvement'...there were a few items. Relative to the info we were sent, this tour was a bit thin on details on where and when to expect to see some of the sights...just that 'we'd bike by them' (and we did, but at the 10 mile point, 15 mile point or ? - the GPS path did not indicate that type of info). One minor irritation, was our third day leg (Tripoli to Astros). We found the ancient site and museum at Tegea per the route description, only to find it was closed on that particular day we were routed to bike thru it. Also, the GPS, as stated it was overall very useful (only steered us off in a minor way once, and we were able to figure out where to go well enough). But the unit would tell us we'd be at the destination...and we'd look around and not see our hotels. We'd spend time walking around, circling about to find it (and the small hotel in Paralion Astros had the hotel name in subtle letters on a glass door...we walked right by it). Similar experience in Nafplio, I had to plug in the name of the hotel in my own smartphone to have it navigate us down side street alleyways to the hotel entrance. So a bit better directions on how to find our hotel upon arrival would have saved us some time out of the sun (already tired after a hot day cycling). And finally along those lines, there was a switch in our hotel in Nafplio versus our stated first night destination (we'd not been told this). That killed time trying to sort that out. Again, more a nuisance level...folks at both hotels quickly helped us figure out the slip up.
As for any general observations about the tour. Unlike some other countries we've ridden thru, there really are no bike trails. However, much of this route is on back roads, where traffic was sparse. In the more congested (streets are narrow) towns, they were pretty small, and so we'd be thru them pretty quick and back on rural side roads. We had no issues with Greek drivers, even got a few friendly honks and waves (other cyclists were few and far between). We did note a lot of stray dogs, but fortunately the only times we encountered any aggressive barking, those dogs were behind fences. We switched to the tours hybrid bikes (I had originally booked road bikes, not knowing the details of the roads and routes), and we were glad we did. There were sections of (flat) gravel roads, particularly on the second bike day, more easily handled with wider tires and upright stance vs narrow tires and drop bars of a road bike. My partner appreciated their better climbing gears, not that the hilly sections weren't beyond our expectations, but in July, the combination of hills and heat (unfortunately, we hit it during a bit of a heatwave) made for slower paced riding. Regarding temperatures, full disclosure, towards the end of the tour, it was forecast to be well over 100 degrees F....we elected to hire a car and guide versus riding (no regrets, it actually hit 105 F that day). We knew this was going to be a hot time of year for this tour (my partner is a public school teacher, though, which limits our major vacation times). If we were not otherwise constrained, this tour in May or in September would be ideal.
To summarize, our glitches were minor, and we thoroughly enjoyed this tour and we're glad we did it.