I stayed at Evans Studios with my boyfriend for a week at the end of September 2011 and was not in the least bit disappointed. What others have written about the studios being a little tired is perhaps true - you'll find chintzy curtains and lino floors here rather than funky modern interior design, however you do get what you pay for and for the absolute bargain price that we paid for our package holiday, we just couldn't complain!
We stayed in Studio No. 7, on the top floor, which has a balcony with a nice enough view out to the sea and overlooking the well-kept gardens. The room is quite basic, with comfy twin beds that we pushed together (we've noticed that double beds are rare in Greece!), a wardrobe, dresser and small kitchenette area. Air conditioning was there if we wanted it but the evenings in late September were cool so we didn't use. The bathroom was plain and of the typical Greek 'wet room' style (i.e. no shower curtain, so cover the loo roll and hang your towel away from the shower!) but the whole place was spotlessly clean and tidy. Our room was cleaned on Tuesday and Thursday by the friendly caretaker, Dennis, which was perfectly adequate.
For a self-catering holiday, it would be a bit difficult to cook proper meals in the studio, as the kitchenette only has two electric hob rings, a fridge, a kettle and not much else. We bought ourselves some coffee and bread and enjoyed a continental breakfast on the balcony each morning, which was perfect for us. There are so many nice restaurants on the main Lassi strip just a few minutes walk away though, we ate out every night and didn't see the basic kitchen as a disadvantage. We recommend the Retsino restaurant (think that's what it was called) which is just at the top of the road on the left hand corner. VERY tasty food and the best kleftiko and Kefalonia meat pie we found! If you visited Greece back when they had the drachma, you'll be disappointed to note that prices are now very similar to what you would expect to pay back home, but it's certainly not more expensive than the UK. You'll pay 2.50-4 euros for a large Mythos beer and about 8-15 euros for a main course. Alternatively, it's a 20 minute stroll into Argostoli where there are just as many restaurants - perhaps a little bit pricier but the restaurants on the main square and along the harbour are in a lovely setting. A taxi back to Lassi cost 6 euros.
While you're in Kefalonia I would definitely recommend hiring a car and exploring the island, especially the beautiful beaches. Myrtos beach and Antisamos beach are famous for featuring in Captain Corelli's Mandolin and are both stunning. The main beach at Lassi is one of the best and has the advantage of being sandy whereas a lot of the others are pebbly. Avithos beach at Svoronata is a lovely sandy strip, and we also liked Agios Kyriakis beach, which we thought had a kind of desert-island-castaway feel to it. Don't forget your snorkel as the water is unbelievably clear!
Apart from beaches, definitely visit Fiskardo, which is the only place on the island that wasn't destroyed in the 1953 earthquake. Don't miss a drive up to the highest point on the island either - the views are amazing! We were a bit disappointed by our visit to Melisani underground lake - there is no doubt that at first glance it is very beautiful, but the entry fee was 7 euros each for a boat trip that lasted approximately 7 minutes - not great value for money, and then we were hassled for a tip which we thought was a bit cheeky! Still, if you're going to visit tourist attractions like this, it's definitely worth hiring your own car and making your own way rather than paying the extortionate prices that the tour operators offer!