We went to Cyprus when I was about 24 weeks - hot, lazy, did nothing except lounge in and by pool. Not v interesting culturally to be honest but was perfect for what we wanted. Don't normally have lazy hols like that but it fit the bill and a 5-hour flight was fine.
We stayed here www.corfu-greece.com/corfupalace/ when I was pregnant. It was lovely because it had a very quiet small pool and was within walking distance of Corfu town. There was little to do on the island ( we found anyway) which was great as it gave me an excuse to relax by the pool and just read magazines.
Disclaimer - it was a wee while ago so it may be different now.
We like Tenerife as a holiday destination( I actually found Lanzarote windier than Tenerife !) but have only been as a family. The Iberostar Anthelia which we love, also has an adults only hotel which is the Iberostar Salome which I imagine would be nice.
Hi Duende - we first stayed in punts mujeres a fishing village - its a good 40 minutes away from the big resorts but lovely - sea water rock pools there, some good fish restaurants, v quiet. Last time and this time we are staying in self catering in Arrieta - where the locals beach is - less than a miles walk to the beach (which has small playground, tapas restaurant and posh fish restaurant) and some nice local fish restaurants and a bakery there.