“If only Delphi's hotels could be avoided...”
Unlike Athens, which now has a competitive market of smart good-value hotels, Delphi hotels seem poor and (because they cost much the same as Athens) very poor value for money. Most were last refurbished in the 1970s. Though hotel staff are friendly, customer service is also 1970s: for example hot water is turned off for two periods every day - doesn't make much difference in practice, but it illustrates an attitude. Many internet reviews say all this, so we had low expectations, and chose Hermes simply because it guaranteed a sea view at the time of booking and has big balconies from which to enjoy it.
Hermes however seems to market itself primarily to student tour groups and when it has them - both nights of our stay - bumps individual travellers into the adjacent Varonos hotel. They seemed to think this was doing us a favour, but Varonos is just as basic and more importantly is set right back so its view is limited. The hotel staff at Varonos were exceptionally friendly and helpful, but the hotel management were not at all sympathetic to even the politest complaint, though they did eventually offer to relocate us into a particularly poor room in Hermes.
Hermes room quality seems variable. Beware.
The archaeological site at Delphi is very interesting, and not to be skipped. It is unfortunate that this of course gives the town's hotels a captive market.
There are good restaurants in Delphi (eg Taverna Vachos) if you avoid those attached to hotels.