My husband and I were looking for somewhere not too busy, yet with a bit of something to do in the evenings-
Platanias Mare fit the bill perfectly!! Located right on the beach with a fantastic little beach bar, the staff were excellent.
The reception area and rooms were really nice, the room itself was one of the better that we've stayed in in Greece (although still fairly basic.)
The pool was nice and warm, and the beach was amazing (although it did get quite busy.)

The Sunset Cruise in Chania was a waste of money in our opinion, so bear that in mind if your rep tries to rope you into it.
We were squeezed into a taxi with two really, REALLY large people, which was a very awkward 30 minute ride. We then were shown around a large market which smelled of fish, and some shops that sold leather handbags on leather street... we then went out on a boat to see an old leper colony while the overzealous German rep yelled "IT'S RAKI TIME!!" and tried to force shots down us.
Sunset itself is beautiful, Rest of that trip was a joke though!

Platanias as a resort was ideal for us, it wasn't over developed (like Ayia Napa / Paphos) but had a great selection of tavernas and small but friendly bars. The beach bars were open until late, but again weren't over busy. I wouldn't recommend Platanias as a resort to someone looking for a clubbing holiday, nor would I recommend it to someone looking for unspoilt, traditional Greece- but for somewhere between the two, it's ideal.

Platanias mare is in a handy location, around 1km away from the town square (which is the busiest part of the town)
Around 300m to the nearest tavernas and bars, handy minimarket & car hire just 100m from hotel.

Sunbeds on the beach right in front of the hotel were around 5 euros a day, air conditioning was 50 euros for the week and well worth it.. (especially as we were there during the heatwave which saw temperatures hit 40+!)