We stayed in Neshkov for 4 nights with family and i really liked it. The place is very close to the beach side, Delfinarium, Piccadilly park, and Primorski park. All of them are in walking distance (if you are a greak walker :-) )The place has its own swimming pool (for children and for adults), nicely maintained and clean. Its very quite and great play to stay.
The only thing which i would like to point out that the Internet is, although, available, but its Hotspot kind of thing. All the time you have to put login etc to get connected. Barring this, everything is perfect.
The staffs are very cooperative. We lost the route and the staffs helped me out even at 12;o clock at night to find the place.